./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.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 fcb75d9c793adce3c2c2ca6d31453358360225b1f8596bb0dddfb529afd517e2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 21:56:36,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 21:56:36,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 21:56:36,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 21:56:36,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 21:56:36,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 21:56:36,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 21:56:36,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 21:56:36,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 21:56:36,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 21:56:36,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 21:56:36,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 21:56:36,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 21:56:36,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 21:56:36,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 21:56:36,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 21:56:36,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 21:56:36,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 21:56:36,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 21:56:36,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 21:56:36,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 21:56:36,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 21:56:36,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 21:56:36,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 21:56:36,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 21:56:36,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 21:56:36,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 21:56:36,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 21:56:36,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 21:56:36,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 21:56:36,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 21:56:36,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 21:56:36,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 21:56:36,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 21:56:36,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 21:56:36,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 21:56:36,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 21:56:36,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 21:56:36,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 21:56:36,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 21:56:36,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 21:56:36,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-21 21:56:36,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 21:56:36,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 21:56:36,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 21:56:36,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 21:56:36,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 21:56:36,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 21:56:36,897 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 21:56:36,897 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 21:56:36,897 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 21:56:36,897 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 21:56:36,898 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 21:56:36,898 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 21:56:36,898 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 21:56:36,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 21:56:36,898 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 21:56:36,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 21:56:36,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 21:56:36,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 21:56:36,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 21:56:36,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 21:56:36,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 21:56:36,899 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 21:56:36,900 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 21:56:36,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 21:56:36,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 21:56:36,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 21:56:36,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 21:56:36,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 21:56:36,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 21:56:36,901 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 21:56:36,901 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fcb75d9c793adce3c2c2ca6d31453358360225b1f8596bb0dddfb529afd517e2 [2021-12-21 21:56:37,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 21:56:37,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 21:56:37,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 21:56:37,082 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 21:56:37,083 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 21:56:37,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2021-12-21 21:56:37,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d107e728/926b193f23044119b596f9ecfa489f1a/FLAGbd096156b [2021-12-21 21:56:37,481 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 21:56:37,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2021-12-21 21:56:37,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d107e728/926b193f23044119b596f9ecfa489f1a/FLAGbd096156b [2021-12-21 21:56:37,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d107e728/926b193f23044119b596f9ecfa489f1a [2021-12-21 21:56:37,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 21:56:37,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 21:56:37,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 21:56:37,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 21:56:37,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 21:56:37,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f77d6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37, skipping insertion in model container [2021-12-21 21:56:37,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 21:56:37,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 21:56:37,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:56:37,632 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 21:56:37,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:56:37,655 INFO L208 MainTranslator]: Completed translation [2021-12-21 21:56:37,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37 WrapperNode [2021-12-21 21:56:37,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 21:56:37,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 21:56:37,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 21:56:37,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 21:56:37,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,681 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2021-12-21 21:56:37,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 21:56:37,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 21:56:37,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 21:56:37,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 21:56:37,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 21:56:37,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 21:56:37,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 21:56:37,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 21:56:37,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37" (1/1) ... [2021-12-21 21:56:37,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:37,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:37,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:37,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-21 21:56:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 21:56:37,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 21:56:37,790 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 21:56:37,791 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 21:56:37,847 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 21:56:37,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 21:56:37,852 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 21:56:37,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:56:37 BoogieIcfgContainer [2021-12-21 21:56:37,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 21:56:37,854 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 21:56:37,854 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 21:56:37,856 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 21:56:37,856 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:56:37,856 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 09:56:37" (1/3) ... [2021-12-21 21:56:37,857 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@286bf479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:56:37, skipping insertion in model container [2021-12-21 21:56:37,857 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:56:37,857 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:37" (2/3) ... [2021-12-21 21:56:37,857 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@286bf479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:56:37, skipping insertion in model container [2021-12-21 21:56:37,857 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:56:37,857 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:56:37" (3/3) ... [2021-12-21 21:56:37,858 INFO L388 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3.c [2021-12-21 21:56:37,889 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 21:56:37,889 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 21:56:37,889 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 21:56:37,889 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 21:56:37,889 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 21:56:37,889 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 21:56:37,889 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 21:56:37,889 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 21:56:37,898 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-12-21 21:56:37,914 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 21:56:37,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:37,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:37,918 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 21:56:37,918 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:37,918 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 21:56:37,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-12-21 21:56:37,919 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 21:56:37,919 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:37,919 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:37,919 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 21:56:37,919 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:37,923 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 10#L27-2true [2021-12-21 21:56:37,924 INFO L793 eck$LassoCheckResult]: Loop: 10#L27-2true assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 8#L19true assume main_~x~0#1 > 0; 9#L20true assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 10#L27-2true [2021-12-21 21:56:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:37,927 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-21 21:56:37,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:37,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818045713] [2021-12-21 21:56:37,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:37,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,036 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,058 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:38,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:38,061 INFO L85 PathProgramCache]: Analyzing trace with hash 40813, now seen corresponding path program 1 times [2021-12-21 21:56:38,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:38,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847278606] [2021-12-21 21:56:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:38,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,076 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,083 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:38,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:38,088 INFO L85 PathProgramCache]: Analyzing trace with hash 28699755, now seen corresponding path program 1 times [2021-12-21 21:56:38,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:38,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167405690] [2021-12-21 21:56:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:38,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,097 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,105 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:38,208 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:38,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:38,209 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:38,209 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:38,209 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:56:38,209 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:38,210 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:38,210 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:38,210 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2021-12-21 21:56:38,210 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:38,210 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:38,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,304 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:38,304 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:56:38,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:38,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:38,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:38,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-21 21:56:38,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:38,331 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:38,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:38,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:38,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:38,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:38,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-21 21:56:38,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:56:38,374 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:38,405 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:56:38,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:38,411 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:38,411 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:38,411 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:38,411 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:38,411 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:56:38,411 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:38,411 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:38,411 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:38,411 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2021-12-21 21:56:38,411 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:38,411 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:38,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,482 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:38,485 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:56:38,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:38,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:38,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:38,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-21 21:56:38,512 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:38,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:38,519 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:38,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:38,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:38,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:38,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:38,525 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:38,530 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:56:38,542 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-21 21:56:38,543 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 21:56:38,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:38,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:38,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:38,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-21 21:56:38,592 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:56:38,592 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:56:38,592 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:56:38,593 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-21 21:56:38,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-21 21:56:38,611 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:56:38,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:38,632 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:38,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:38,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:38,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:38,678 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 21:56:38,679 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:38,723 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 65 transitions. Complement of second has 8 states. [2021-12-21 21:56:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2021-12-21 21:56:38,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-21 21:56:38,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:38,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-21 21:56:38,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:38,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-21 21:56:38,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:38,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 65 transitions. [2021-12-21 21:56:38,733 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-12-21 21:56:38,735 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 17 states and 25 transitions. [2021-12-21 21:56:38,735 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-21 21:56:38,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-21 21:56:38,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 25 transitions. [2021-12-21 21:56:38,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:56:38,736 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 25 transitions. [2021-12-21 21:56:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 25 transitions. [2021-12-21 21:56:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-12-21 21:56:38,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 14 states have internal predecessors, (22), 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) [2021-12-21 21:56:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2021-12-21 21:56:38,753 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-12-21 21:56:38,753 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-12-21 21:56:38,753 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 21:56:38,753 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2021-12-21 21:56:38,753 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-12-21 21:56:38,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:38,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:38,754 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-21 21:56:38,754 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:38,754 INFO L791 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 100#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 103#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 113#L19 assume !(main_~x~0#1 > 0); 101#L27 [2021-12-21 21:56:38,754 INFO L793 eck$LassoCheckResult]: Loop: 101#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 102#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 112#L19 assume !(main_~x~0#1 > 0); 101#L27 [2021-12-21 21:56:38,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:38,754 INFO L85 PathProgramCache]: Analyzing trace with hash 925806, now seen corresponding path program 1 times [2021-12-21 21:56:38,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:38,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364850149] [2021-12-21 21:56:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:38,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,758 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,760 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:38,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:38,761 INFO L85 PathProgramCache]: Analyzing trace with hash 54179, now seen corresponding path program 1 times [2021-12-21 21:56:38,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:38,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392865384] [2021-12-21 21:56:38,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:38,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,765 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,768 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:38,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:38,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1810907158, now seen corresponding path program 1 times [2021-12-21 21:56:38,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:38,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732943985] [2021-12-21 21:56:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:38,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,773 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:38,776 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:38,805 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:38,806 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:38,806 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:38,806 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:38,806 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:56:38,806 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:38,806 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:38,806 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:38,806 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2021-12-21 21:56:38,806 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:38,806 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:38,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:38,862 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:38,862 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:56:38,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:38,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:38,863 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:38,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-21 21:56:38,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:38,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:38,897 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:38,897 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:38,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:38,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:38,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:38,915 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:38,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-21 21:56:38,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:38,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:38,962 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:38,963 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:38,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:38,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:38,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:38,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:38,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-21 21:56:38,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:38,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:39,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:39,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,026 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:39,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-21 21:56:39,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:56:39,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:39,092 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:56:39,096 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 [2021-12-21 21:56:39,096 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:39,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:39,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:39,096 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:39,096 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:56:39,096 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,096 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:39,096 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:39,096 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2021-12-21 21:56:39,096 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:39,096 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:39,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,170 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:39,170 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:56:39,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,171 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:39,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-21 21:56:39,173 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:39,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:39,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:39,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:39,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:39,182 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 21:56:39,182 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 21:56:39,198 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:56:39,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:39,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,218 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:39,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-21 21:56:39,220 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:39,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:39,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:39,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:39,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:39,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:39,228 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:39,228 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:39,242 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:56:39,244 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-21 21:56:39,244 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 21:56:39,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,246 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:39,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-21 21:56:39,250 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:56:39,250 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:56:39,250 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:56:39,250 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-21 21:56:39,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:39,268 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:56:39,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:39,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:39,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:39,292 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:39,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:39,314 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 21:56:39,314 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:39,335 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 51 transitions. Complement of second has 7 states. [2021-12-21 21:56:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:39,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-12-21 21:56:39,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 3 letters. [2021-12-21 21:56:39,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:39,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-21 21:56:39,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:39,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 6 letters. [2021-12-21 21:56:39,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:39,337 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 51 transitions. [2021-12-21 21:56:39,338 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2021-12-21 21:56:39,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 51 transitions. [2021-12-21 21:56:39,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-12-21 21:56:39,339 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-12-21 21:56:39,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 51 transitions. [2021-12-21 21:56:39,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:56:39,339 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 51 transitions. [2021-12-21 21:56:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 51 transitions. [2021-12-21 21:56:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-12-21 21:56:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 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) [2021-12-21 21:56:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 49 transitions. [2021-12-21 21:56:39,341 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 49 transitions. [2021-12-21 21:56:39,341 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 49 transitions. [2021-12-21 21:56:39,341 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 21:56:39,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 49 transitions. [2021-12-21 21:56:39,342 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2021-12-21 21:56:39,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:39,342 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:39,342 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-21 21:56:39,342 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:39,342 INFO L791 eck$LassoCheckResult]: Stem: 192#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 193#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 198#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 210#L19 assume main_~x~0#1 > 0; 200#L20 [2021-12-21 21:56:39,342 INFO L793 eck$LassoCheckResult]: Loop: 200#L20 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 216#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 199#L19 assume main_~x~0#1 > 0; 200#L20 [2021-12-21 21:56:39,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:39,342 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-12-21 21:56:39,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:39,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795960573] [2021-12-21 21:56:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:39,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,345 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,348 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:39,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:39,349 INFO L85 PathProgramCache]: Analyzing trace with hash 48405, now seen corresponding path program 1 times [2021-12-21 21:56:39,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:39,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136442073] [2021-12-21 21:56:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:39,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,352 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,354 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:39,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1810663056, now seen corresponding path program 1 times [2021-12-21 21:56:39,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:39,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299405768] [2021-12-21 21:56:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:39,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,357 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,360 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:39,390 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:39,390 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:39,390 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:39,390 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:39,390 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:56:39,390 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,390 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:39,390 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:39,390 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2021-12-21 21:56:39,390 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:39,390 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:39,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,435 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:39,435 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:56:39,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,436 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:39,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-21 21:56:39,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:39,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:39,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:39,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,488 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:39,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:56:39,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:39,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-21 21:56:39,550 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:56:39,556 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 [2021-12-21 21:56:39,556 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:39,556 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:39,556 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:39,556 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:39,556 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:56:39,556 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,556 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:39,556 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:39,556 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2021-12-21 21:56:39,556 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:39,556 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:39,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,623 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:39,623 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:56:39,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,625 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:39,639 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 [2021-12-21 21:56:39,672 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:39,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:39,678 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:39,678 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:39,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:39,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:39,678 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:39,679 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:39,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-21 21:56:39,682 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 [2021-12-21 21:56:39,690 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:56:39,692 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-21 21:56:39,692 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 21:56:39,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,709 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:39,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-21 21:56:39,713 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:56:39,713 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:56:39,713 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:56:39,713 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-21 21:56:39,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:39,730 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:56:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:39,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:39,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:39,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:39,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:39,770 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-21 21:56:39,770 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 49 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:39,785 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 49 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 97 states and 150 transitions. Complement of second has 7 states. [2021-12-21 21:56:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-21 21:56:39,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2021-12-21 21:56:39,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:39,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-21 21:56:39,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:39,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 6 letters. [2021-12-21 21:56:39,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:39,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 150 transitions. [2021-12-21 21:56:39,789 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2021-12-21 21:56:39,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 84 states and 129 transitions. [2021-12-21 21:56:39,790 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-12-21 21:56:39,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-12-21 21:56:39,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 129 transitions. [2021-12-21 21:56:39,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:56:39,790 INFO L681 BuchiCegarLoop]: Abstraction has 84 states and 129 transitions. [2021-12-21 21:56:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 129 transitions. [2021-12-21 21:56:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2021-12-21 21:56:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 79 states have (on average 1.5696202531645569) internal successors, (124), 78 states have internal predecessors, (124), 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) [2021-12-21 21:56:39,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 124 transitions. [2021-12-21 21:56:39,795 INFO L704 BuchiCegarLoop]: Abstraction has 79 states and 124 transitions. [2021-12-21 21:56:39,795 INFO L587 BuchiCegarLoop]: Abstraction has 79 states and 124 transitions. [2021-12-21 21:56:39,795 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-21 21:56:39,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79 states and 124 transitions. [2021-12-21 21:56:39,796 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2021-12-21 21:56:39,796 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:39,796 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:39,796 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-21 21:56:39,796 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:39,796 INFO L791 eck$LassoCheckResult]: Stem: 366#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 367#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 372#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 405#L19 assume !(main_~x~0#1 > 0); 404#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 400#L27-2 [2021-12-21 21:56:39,796 INFO L793 eck$LassoCheckResult]: Loop: 400#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 397#L19 assume !(main_~x~0#1 > 0); 398#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 400#L27-2 [2021-12-21 21:56:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash 28700013, now seen corresponding path program 1 times [2021-12-21 21:56:39,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:39,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826847734] [2021-12-21 21:56:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:39,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,800 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,802 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:39,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:39,803 INFO L85 PathProgramCache]: Analyzing trace with hash 41069, now seen corresponding path program 2 times [2021-12-21 21:56:39,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:39,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613804568] [2021-12-21 21:56:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:39,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,805 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,807 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:39,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:39,807 INFO L85 PathProgramCache]: Analyzing trace with hash 303606657, now seen corresponding path program 1 times [2021-12-21 21:56:39,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:39,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675347069] [2021-12-21 21:56:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:39,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,812 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:39,815 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:39,833 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:39,833 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:39,833 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:39,833 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:39,833 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:56:39,833 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,833 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:39,833 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:39,833 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2021-12-21 21:56:39,833 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:39,833 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:39,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,878 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:39,878 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:56:39,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,879 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:39,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-21 21:56:39,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:39,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:39,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:39,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:39,935 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:39,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-21 21:56:39,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:56:39,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:39,978 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:56:39,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:39,981 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:39,982 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:39,982 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:39,982 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:39,982 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:56:39,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:39,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:39,982 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:39,982 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2021-12-21 21:56:39,982 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:39,982 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:39,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:39,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,054 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:40,054 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:56:40,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,061 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,063 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:40,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:40,069 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:40,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:40,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:40,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:40,070 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:40,070 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:40,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-21 21:56:40,083 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:56:40,085 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-21 21:56:40,085 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 21:56:40,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,086 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-21 21:56:40,105 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:56:40,106 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:56:40,106 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:56:40,106 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-21 21:56:40,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:40,138 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:56:40,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:40,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:40,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:40,164 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:40,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:40,178 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 21:56:40,179 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 124 transitions. cyclomatic complexity: 58 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-21 21:56:40,204 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 124 transitions. cyclomatic complexity: 58. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 121 states and 194 transitions. Complement of second has 7 states. [2021-12-21 21:56:40,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-21 21:56:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-21 21:56:40,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-21 21:56:40,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:40,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-21 21:56:40,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:40,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2021-12-21 21:56:40,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:40,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 194 transitions. [2021-12-21 21:56:40,215 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 27 [2021-12-21 21:56:40,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 119 states and 189 transitions. [2021-12-21 21:56:40,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2021-12-21 21:56:40,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-12-21 21:56:40,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 189 transitions. [2021-12-21 21:56:40,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:56:40,220 INFO L681 BuchiCegarLoop]: Abstraction has 119 states and 189 transitions. [2021-12-21 21:56:40,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 189 transitions. [2021-12-21 21:56:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2021-12-21 21:56:40,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 115 states have (on average 1.5826086956521739) internal successors, (182), 114 states have internal predecessors, (182), 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) [2021-12-21 21:56:40,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 182 transitions. [2021-12-21 21:56:40,232 INFO L704 BuchiCegarLoop]: Abstraction has 115 states and 182 transitions. [2021-12-21 21:56:40,232 INFO L587 BuchiCegarLoop]: Abstraction has 115 states and 182 transitions. [2021-12-21 21:56:40,232 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-21 21:56:40,232 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 182 transitions. [2021-12-21 21:56:40,233 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 27 [2021-12-21 21:56:40,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:40,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:40,236 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2021-12-21 21:56:40,236 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:40,237 INFO L791 eck$LassoCheckResult]: Stem: 614#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 615#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 624#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 659#L19 assume main_~x~0#1 > 0; 723#L20 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 691#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 689#L19 assume main_~x~0#1 > 0; 680#L20 [2021-12-21 21:56:40,237 INFO L793 eck$LassoCheckResult]: Loop: 680#L20 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 681#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 693#L19 assume main_~x~0#1 > 0; 680#L20 [2021-12-21 21:56:40,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1810661134, now seen corresponding path program 2 times [2021-12-21 21:56:40,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:40,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721819548] [2021-12-21 21:56:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:40,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:40,249 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:40,264 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:40,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:40,265 INFO L85 PathProgramCache]: Analyzing trace with hash 48405, now seen corresponding path program 2 times [2021-12-21 21:56:40,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:40,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534951877] [2021-12-21 21:56:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:40,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:40,268 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:40,270 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:40,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash 911591144, now seen corresponding path program 1 times [2021-12-21 21:56:40,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:40,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195276850] [2021-12-21 21:56:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:40,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:40,274 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:40,280 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:40,298 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:40,298 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:40,298 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:40,298 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:40,298 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:56:40,298 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,298 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:40,299 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:40,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2021-12-21 21:56:40,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:40,299 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:40,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,338 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:40,338 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:56:40,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,352 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:40,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:40,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-21 21:56:40,373 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:40,373 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=1} Honda state: {ULTIMATE.start_main_~x~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:40,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:40,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,390 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-21 21:56:40,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:40,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:40,400 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:40,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:40,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:40,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,416 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-21 21:56:40,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:40,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:40,430 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:40,430 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:40,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-21 21:56:40,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,447 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-21 21:56:40,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:40,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:40,461 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:40,461 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:40,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:40,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,478 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-21 21:56:40,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:40,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:40,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-21 21:56:40,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,505 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-21 21:56:40,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:56:40,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:40,563 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:56:40,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:40,569 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:40,569 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:40,569 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:40,569 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:40,569 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:56:40,569 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,569 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:40,569 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:40,569 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2021-12-21 21:56:40,569 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:40,569 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:40,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:40,616 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:40,616 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:56:40,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,617 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-21 21:56:40,619 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:40,626 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:40,626 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:40,626 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:40,626 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:40,626 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:40,627 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:40,627 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:40,641 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:56:40,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:40,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,660 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-21 21:56:40,662 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:40,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:40,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:40,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:40,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:40,670 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 21:56:40,670 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 21:56:40,683 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:56:40,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-12-21 21:56:40,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,700 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-21 21:56:40,703 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:40,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:40,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:40,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:40,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:40,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:40,713 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:40,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:40,722 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:56:40,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-21 21:56:40,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,738 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-21 21:56:40,739 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:40,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:40,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:40,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:40,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:40,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:40,746 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:40,746 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:40,755 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:56:40,757 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 21:56:40,757 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 21:56:40,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:40,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:40,758 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:40,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-21 21:56:40,760 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:56:40,760 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:56:40,760 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:56:40,760 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-21 21:56:40,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:40,776 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:56:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:40,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:40,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:40,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:40,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:40,822 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-21 21:56:40,822 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:40,837 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 197 states and 309 transitions. Complement of second has 7 states. [2021-12-21 21:56:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-21 21:56:40,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-21 21:56:40,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:40,838 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 21:56:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:40,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:40,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:40,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:40,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:40,886 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-21 21:56:40,886 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:40,906 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 181 states and 280 transitions. Complement of second has 7 states. [2021-12-21 21:56:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-12-21 21:56:40,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-21 21:56:40,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:40,907 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 21:56:40,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:40,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:40,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:40,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:40,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:40,963 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-21 21:56:40,963 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:40,981 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 313 states and 486 transitions. Complement of second has 9 states. [2021-12-21 21:56:40,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:40,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-12-21 21:56:40,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-21 21:56:40,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:41,004 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-21 21:56:41,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:41,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 7 letters. Loop has 6 letters. [2021-12-21 21:56:41,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:41,007 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 313 states and 486 transitions. [2021-12-21 21:56:41,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-21 21:56:41,028 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 62 [2021-12-21 21:56:41,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 313 states to 223 states and 344 transitions. [2021-12-21 21:56:41,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2021-12-21 21:56:41,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-12-21 21:56:41,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 344 transitions. [2021-12-21 21:56:41,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:56:41,029 INFO L681 BuchiCegarLoop]: Abstraction has 223 states and 344 transitions. [2021-12-21 21:56:41,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states and 344 transitions. [2021-12-21 21:56:41,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 123. [2021-12-21 21:56:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 123 states have (on average 1.6178861788617886) internal successors, (199), 122 states have internal predecessors, (199), 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) [2021-12-21 21:56:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 199 transitions. [2021-12-21 21:56:41,035 INFO L704 BuchiCegarLoop]: Abstraction has 123 states and 199 transitions. [2021-12-21 21:56:41,035 INFO L587 BuchiCegarLoop]: Abstraction has 123 states and 199 transitions. [2021-12-21 21:56:41,035 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-21 21:56:41,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 123 states and 199 transitions. [2021-12-21 21:56:41,036 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 48 [2021-12-21 21:56:41,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:41,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:41,036 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-21 21:56:41,036 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2021-12-21 21:56:41,036 INFO L791 eck$LassoCheckResult]: Stem: 1557#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1558#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 1567#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1648#L19 assume !(main_~x~0#1 > 0); 1645#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 1623#L27-2 [2021-12-21 21:56:41,036 INFO L793 eck$LassoCheckResult]: Loop: 1623#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1676#L19 assume main_~x~0#1 > 0; 1675#L20 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1604#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1602#L19 assume !(main_~x~0#1 > 0); 1603#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 1623#L27-2 [2021-12-21 21:56:41,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:41,037 INFO L85 PathProgramCache]: Analyzing trace with hash 28700011, now seen corresponding path program 2 times [2021-12-21 21:56:41,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:41,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414503000] [2021-12-21 21:56:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:41,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:41,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,053 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,055 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:41,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1215871361, now seen corresponding path program 1 times [2021-12-21 21:56:41,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:41,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781575232] [2021-12-21 21:56:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:41,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:41,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:41,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 21:56:41,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781575232] [2021-12-21 21:56:41,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781575232] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 21:56:41,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 21:56:41,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 21:56:41,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316869915] [2021-12-21 21:56:41,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 21:56:41,095 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 21:56:41,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 21:56:41,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 21:56:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 21:56:41,097 INFO L87 Difference]: Start difference. First operand 123 states and 199 transitions. cyclomatic complexity: 88 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-21 21:56:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 21:56:41,116 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2021-12-21 21:56:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 21:56:41,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 96 transitions. [2021-12-21 21:56:41,117 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2021-12-21 21:56:41,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 48 states and 67 transitions. [2021-12-21 21:56:41,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-12-21 21:56:41,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-12-21 21:56:41,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 67 transitions. [2021-12-21 21:56:41,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:56:41,118 INFO L681 BuchiCegarLoop]: Abstraction has 48 states and 67 transitions. [2021-12-21 21:56:41,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 67 transitions. [2021-12-21 21:56:41,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 24. [2021-12-21 21:56:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 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) [2021-12-21 21:56:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-12-21 21:56:41,119 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-12-21 21:56:41,119 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-12-21 21:56:41,119 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-21 21:56:41,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2021-12-21 21:56:41,119 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-21 21:56:41,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:41,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:41,120 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-21 21:56:41,120 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:41,120 INFO L791 eck$LassoCheckResult]: Stem: 1757#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1758#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 1768#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1778#L19 assume !(main_~x~0#1 > 0); 1777#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 1769#L27-2 [2021-12-21 21:56:41,120 INFO L793 eck$LassoCheckResult]: Loop: 1769#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1763#L19 assume main_~x~0#1 > 0; 1764#L20 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1769#L27-2 [2021-12-21 21:56:41,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash 28700011, now seen corresponding path program 3 times [2021-12-21 21:56:41,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:41,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435986641] [2021-12-21 21:56:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:41,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,122 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,124 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash 40813, now seen corresponding path program 2 times [2021-12-21 21:56:41,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:41,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084505159] [2021-12-21 21:56:41,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:41,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,126 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,128 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:41,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:41,128 INFO L85 PathProgramCache]: Analyzing trace with hash 303546819, now seen corresponding path program 1 times [2021-12-21 21:56:41,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:41,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395775449] [2021-12-21 21:56:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:41,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:41,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 21:56:41,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395775449] [2021-12-21 21:56:41,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395775449] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 21:56:41,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535071717] [2021-12-21 21:56:41,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:41,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 21:56:41,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,151 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-21 21:56:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:41,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:41,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:41,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 21:56:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:41,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535071717] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 21:56:41,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 21:56:41,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-12-21 21:56:41,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006804397] [2021-12-21 21:56:41,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 21:56:41,239 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:41,240 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:41,240 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:41,240 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:41,240 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:56:41,240 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,240 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:41,240 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:41,240 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration7_Loop [2021-12-21 21:56:41,240 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:41,240 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:41,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,279 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:41,279 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:56:41,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,280 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-21 21:56:41,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:41,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:41,342 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:41,342 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=3, ULTIMATE.start_main_~y~0#1=3} Honda state: {ULTIMATE.start_main_#t~nondet3#1=3, ULTIMATE.start_main_~y~0#1=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:41,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:41,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,360 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-21 21:56:41,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:41,362 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:41,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:41,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,386 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-21 21:56:41,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:56:41,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:41,414 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:56:41,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:41,419 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:41,419 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:41,419 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:41,419 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:41,419 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:56:41,419 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,419 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:41,419 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:41,419 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration7_Loop [2021-12-21 21:56:41,419 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:41,419 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:41,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,477 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:41,477 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:56:41,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,478 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-21 21:56:41,480 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:41,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:41,486 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:41,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:41,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:41,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:41,487 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:41,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:41,491 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:56:41,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:41,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,508 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-21 21:56:41,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:41,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:41,516 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:41,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:41,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:41,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:41,516 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:41,516 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:41,531 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:56:41,533 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 21:56:41,533 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 21:56:41,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,534 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-21 21:56:41,536 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:56:41,536 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:56:41,536 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:56:41,536 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-21 21:56:41,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:41,554 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:56:41,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:41,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:41,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:41,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:41,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:41,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:41,604 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 21:56:41,604 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-21 21:56:41,618 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 72 states and 101 transitions. Complement of second has 7 states. [2021-12-21 21:56:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-21 21:56:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-21 21:56:41,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-21 21:56:41,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:41,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-21 21:56:41,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:41,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 6 letters. [2021-12-21 21:56:41,620 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:41,620 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 101 transitions. [2021-12-21 21:56:41,620 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 20 [2021-12-21 21:56:41,621 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 50 states and 70 transitions. [2021-12-21 21:56:41,621 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-12-21 21:56:41,621 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-12-21 21:56:41,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 70 transitions. [2021-12-21 21:56:41,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:56:41,621 INFO L681 BuchiCegarLoop]: Abstraction has 50 states and 70 transitions. [2021-12-21 21:56:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 70 transitions. [2021-12-21 21:56:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2021-12-21 21:56:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 35 states have internal predecessors, (51), 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) [2021-12-21 21:56:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2021-12-21 21:56:41,623 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2021-12-21 21:56:41,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 21:56:41,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 21:56:41,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 21:56:41,623 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-12-21 21:56:41,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 21:56:41,635 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-12-21 21:56:41,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 21:56:41,636 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 56 transitions. [2021-12-21 21:56:41,636 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2021-12-21 21:56:41,637 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 40 states and 54 transitions. [2021-12-21 21:56:41,637 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-12-21 21:56:41,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-12-21 21:56:41,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 54 transitions. [2021-12-21 21:56:41,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:56:41,637 INFO L681 BuchiCegarLoop]: Abstraction has 40 states and 54 transitions. [2021-12-21 21:56:41,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 54 transitions. [2021-12-21 21:56:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-12-21 21:56:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 26 states have internal predecessors, (36), 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) [2021-12-21 21:56:41,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-12-21 21:56:41,639 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-12-21 21:56:41,639 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-12-21 21:56:41,639 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-21 21:56:41,639 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 36 transitions. [2021-12-21 21:56:41,639 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-12-21 21:56:41,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:41,639 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:41,640 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-12-21 21:56:41,640 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:41,640 INFO L791 eck$LassoCheckResult]: Stem: 2024#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2025#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2032#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2044#L19 assume !(main_~x~0#1 > 0); 2041#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2043#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2045#L19 assume main_~x~0#1 > 0; 2039#L20 [2021-12-21 21:56:41,640 INFO L793 eck$LassoCheckResult]: Loop: 2039#L20 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 2034#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2040#L19 assume main_~x~0#1 > 0; 2039#L20 [2021-12-21 21:56:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1810909072, now seen corresponding path program 1 times [2021-12-21 21:56:41,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:41,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661859109] [2021-12-21 21:56:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:41,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,644 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,646 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:41,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:41,647 INFO L85 PathProgramCache]: Analyzing trace with hash 46483, now seen corresponding path program 3 times [2021-12-21 21:56:41,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:41,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683336487] [2021-12-21 21:56:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:41,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,649 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,651 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:41,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash -292024412, now seen corresponding path program 1 times [2021-12-21 21:56:41,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:41,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089852545] [2021-12-21 21:56:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:41,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,655 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:41,658 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:41,680 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:41,680 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:41,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:41,680 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:41,681 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:56:41,681 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,681 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:41,681 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:41,681 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration8_Loop [2021-12-21 21:56:41,681 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:41,681 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:41,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,727 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:41,727 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:56:41,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,728 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-21 21:56:41,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:41,730 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:41,745 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:41,745 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:41,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-12-21 21:56:41,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,764 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:41,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:41,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-21 21:56:41,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:41,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,802 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-21 21:56:41,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:56:41,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:41,903 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:56:41,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:41,909 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:41,909 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:41,909 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:41,909 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:41,909 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:56:41,909 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,909 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:41,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:41,909 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration8_Loop [2021-12-21 21:56:41,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:41,909 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:41,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:41,959 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:41,959 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:56:41,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,960 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-21 21:56:41,962 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:41,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:41,968 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:41,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:41,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:41,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:41,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:41,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:41,984 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:56:41,986 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 21:56:41,986 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 21:56:41,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:41,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:41,987 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:41,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-21 21:56:41,988 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:56:41,988 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:56:41,989 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:56:41,989 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-21 21:56:42,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,007 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:56:42,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:42,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:42,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:42,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:42,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:42,042 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 21:56:42,043 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 36 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:42,054 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 36 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 50 transitions. Complement of second has 6 states. [2021-12-21 21:56:42,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-21 21:56:42,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-21 21:56:42,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:42,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-21 21:56:42,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:42,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2021-12-21 21:56:42,056 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:42,056 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 50 transitions. [2021-12-21 21:56:42,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-21 21:56:42,056 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 20 states and 25 transitions. [2021-12-21 21:56:42,056 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-12-21 21:56:42,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-12-21 21:56:42,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 25 transitions. [2021-12-21 21:56:42,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:56:42,057 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-12-21 21:56:42,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 25 transitions. [2021-12-21 21:56:42,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-12-21 21:56:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 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) [2021-12-21 21:56:42,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2021-12-21 21:56:42,058 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-12-21 21:56:42,058 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-12-21 21:56:42,058 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-21 21:56:42,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2021-12-21 21:56:42,058 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 21:56:42,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:42,058 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:42,059 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2021-12-21 21:56:42,059 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:42,059 INFO L791 eck$LassoCheckResult]: Stem: 2140#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2141#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2150#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2156#L19 assume !(main_~x~0#1 > 0); 2155#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2152#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2153#L19 assume !(main_~x~0#1 > 0); 2142#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2143#L27-2 [2021-12-21 21:56:42,059 INFO L793 eck$LassoCheckResult]: Loop: 2143#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2146#L19 assume !(main_~x~0#1 > 0); 2147#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 2143#L27-2 [2021-12-21 21:56:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:42,059 INFO L85 PathProgramCache]: Analyzing trace with hash 303606659, now seen corresponding path program 2 times [2021-12-21 21:56:42,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:42,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601870866] [2021-12-21 21:56:42,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:42,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,063 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,066 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:42,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:42,066 INFO L85 PathProgramCache]: Analyzing trace with hash 41069, now seen corresponding path program 3 times [2021-12-21 21:56:42,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:42,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864108052] [2021-12-21 21:56:42,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:42,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,069 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,070 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash -455135829, now seen corresponding path program 2 times [2021-12-21 21:56:42,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:42,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638717101] [2021-12-21 21:56:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:42,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,074 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,077 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:42,093 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:42,093 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:42,093 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:42,093 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:42,093 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:56:42,093 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,093 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:42,093 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:42,093 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration9_Loop [2021-12-21 21:56:42,093 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:42,093 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:42,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,159 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:42,159 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:56:42,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,161 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-21 21:56:42,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:42,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:42,184 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:42,184 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:42,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,201 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-21 21:56:42,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:42,202 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:42,223 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:42,223 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=1} Honda state: {ULTIMATE.start_main_~y~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:42,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-12-21 21:56:42,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,240 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-21 21:56:42,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:42,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:42,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,265 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-21 21:56:42,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:56:42,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:42,302 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:56:42,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,306 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:42,306 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:42,306 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:42,306 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:42,306 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:56:42,306 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,306 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:42,306 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:42,306 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration9_Loop [2021-12-21 21:56:42,306 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:42,306 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:42,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,346 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:42,346 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:56:42,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,347 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-21 21:56:42,349 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:42,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:42,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:42,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:42,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:42,357 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 21:56:42,357 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 21:56:42,360 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:56:42,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,376 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-12-21 21:56:42,378 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:42,384 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:42,384 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:42,384 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:42,384 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:42,384 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:42,384 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:42,385 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:42,391 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:56:42,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,407 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-12-21 21:56:42,409 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:42,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:42,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:42,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:42,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:42,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:42,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:42,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:42,430 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:56:42,432 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 21:56:42,432 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 21:56:42,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,433 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-12-21 21:56:42,434 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:56:42,434 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:56:42,434 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:56:42,434 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-21 21:56:42,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,450 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:56:42,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:42,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:42,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:42,478 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:42,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:42,490 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 21:56:42,490 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:42,497 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 28 transitions. Complement of second has 7 states. [2021-12-21 21:56:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:42,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-21 21:56:42,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-21 21:56:42,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:42,498 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 21:56:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:42,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:42,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:42,522 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:42,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:42,533 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 21:56:42,533 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:42,539 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 28 transitions. Complement of second has 7 states. [2021-12-21 21:56:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-21 21:56:42,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-21 21:56:42,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:42,540 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 21:56:42,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:42,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:42,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:42,565 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:42,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:42,576 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 21:56:42,576 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:42,581 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 32 transitions. Complement of second has 6 states. [2021-12-21 21:56:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:56:42,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-12-21 21:56:42,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-21 21:56:42,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:42,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 11 letters. Loop has 3 letters. [2021-12-21 21:56:42,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:42,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2021-12-21 21:56:42,583 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:42,583 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 32 transitions. [2021-12-21 21:56:42,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 21:56:42,583 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 26 transitions. [2021-12-21 21:56:42,583 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-21 21:56:42,584 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-21 21:56:42,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2021-12-21 21:56:42,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:56:42,584 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-12-21 21:56:42,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2021-12-21 21:56:42,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2021-12-21 21:56:42,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 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) [2021-12-21 21:56:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-12-21 21:56:42,585 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-12-21 21:56:42,585 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-12-21 21:56:42,585 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-21 21:56:42,585 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2021-12-21 21:56:42,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 21:56:42,585 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:56:42,585 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:56:42,585 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-21 21:56:42,585 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:56:42,586 INFO L791 eck$LassoCheckResult]: Stem: 2363#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2371#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2376#L19 assume !(main_~x~0#1 > 0); 2375#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2366#L27-2 [2021-12-21 21:56:42,586 INFO L793 eck$LassoCheckResult]: Loop: 2366#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2369#L19 assume !(main_~x~0#1 > 0); 2365#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2366#L27-2 [2021-12-21 21:56:42,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:42,586 INFO L85 PathProgramCache]: Analyzing trace with hash 28700013, now seen corresponding path program 3 times [2021-12-21 21:56:42,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:42,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623893493] [2021-12-21 21:56:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:42,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,588 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,590 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:42,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:42,590 INFO L85 PathProgramCache]: Analyzing trace with hash 41071, now seen corresponding path program 1 times [2021-12-21 21:56:42,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:42,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843138905] [2021-12-21 21:56:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:42,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,592 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,593 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:42,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:42,593 INFO L85 PathProgramCache]: Analyzing trace with hash 303606659, now seen corresponding path program 4 times [2021-12-21 21:56:42,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:56:42,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840124166] [2021-12-21 21:56:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:56:42,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:56:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,596 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:56:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:56:42,598 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:56:42,619 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:42,619 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:42,619 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:42,619 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:42,619 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:56:42,619 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,619 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:42,619 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:42,619 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration10_Loop [2021-12-21 21:56:42,619 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:42,620 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:42,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,668 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:42,668 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:56:42,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,669 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-21 21:56:42,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:42,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:42,692 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:56:42,692 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:56:42,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,708 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-12-21 21:56:42,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:56:42,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:42,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,746 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-12-21 21:56:42,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:56:42,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:56:42,781 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:56:42,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,784 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:56:42,784 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:56:42,784 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:56:42,784 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:56:42,784 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:56:42,784 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,784 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:56:42,784 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:56:42,784 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration10_Loop [2021-12-21 21:56:42,785 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:56:42,785 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:56:42,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:56:42,830 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:56:42,830 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:56:42,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,832 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-21 21:56:42,833 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:42,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:42,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:42,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:42,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:42,840 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 21:56:42,840 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 21:56:42,856 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:56:42,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,871 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-21 21:56:42,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:56:42,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:56:42,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:56:42,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:56:42,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:56:42,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:56:42,880 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:56:42,880 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:56:42,894 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:56:42,895 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-21 21:56:42,895 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 21:56:42,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:56:42,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:56:42,896 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:56:42,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-12-21 21:56:42,898 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:56:42,898 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:56:42,898 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:56:42,898 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-21 21:56:42,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:42,913 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:56:42,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:56:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:42,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:56:42,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:56:42,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:56:42,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:56:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:56:42,950 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 21:56:42,950 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-21 21:56:42,955 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 31 transitions. Complement of second has 4 states. [2021-12-21 21:56:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-21 21:56:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-21 21:56:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-12-21 21:56:42,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-21 21:56:42,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:42,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-21 21:56:42,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:42,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 5 letters. Loop has 6 letters. [2021-12-21 21:56:42,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:56:42,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2021-12-21 21:56:42,957 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 21:56:42,957 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2021-12-21 21:56:42,957 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-21 21:56:42,957 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-21 21:56:42,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-21 21:56:42,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 21:56:42,958 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 21:56:42,958 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 21:56:42,958 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 21:56:42,958 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-21 21:56:42,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-21 21:56:42,958 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 21:56:42,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-21 21:56:42,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 09:56:42 BoogieIcfgContainer [2021-12-21 21:56:42,962 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 21:56:42,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 21:56:42,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 21:56:42,963 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 21:56:42,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:56:37" (3/4) ... [2021-12-21 21:56:42,965 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 21:56:42,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 21:56:42,965 INFO L158 Benchmark]: Toolchain (without parser) took 5464.26ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 94.4MB in the beginning and 62.4MB in the end (delta: 31.9MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. [2021-12-21 21:56:42,966 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:56:42,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.64ms. Allocated memory is still 117.4MB. Free memory was 94.4MB in the beginning and 93.3MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 21:56:42,966 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.68ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 91.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:56:42,966 INFO L158 Benchmark]: Boogie Preprocessor took 13.90ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 90.7MB in the end (delta: 971.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 21:56:42,966 INFO L158 Benchmark]: RCFGBuilder took 155.57ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 82.4MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 21:56:42,967 INFO L158 Benchmark]: BuchiAutomizer took 5109.00ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 82.4MB in the beginning and 62.4MB in the end (delta: 20.0MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2021-12-21 21:56:42,967 INFO L158 Benchmark]: Witness Printer took 2.30ms. Allocated memory is still 142.6MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:56:42,968 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 92.3MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.64ms. Allocated memory is still 117.4MB. Free memory was 94.4MB in the beginning and 93.3MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.68ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 91.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.90ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 90.7MB in the end (delta: 971.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 155.57ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 82.4MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5109.00ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 82.4MB in the beginning and 62.4MB in the end (delta: 20.0MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. * Witness Printer took 2.30ms. Allocated memory is still 142.6MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (2 trivial, 7 deterministic, 2 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function -1 * x and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.0s and 11 iterations. TraceHistogramMax:2. Analysis of lassos took 4.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 173 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 123 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 181 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 184 IncrementalHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 137 mSDtfsCounter, 184 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax160 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf94 smp86 dnf100 smp100 tf113 neg98 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-21 21:56:42,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:43,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:43,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-12-21 21:56:43,602 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