./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 35987657 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-?-3598765 [2022-07-22 01:28:24,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 01:28:24,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 01:28:24,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 01:28:24,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 01:28:24,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 01:28:24,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 01:28:24,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 01:28:24,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 01:28:24,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 01:28:24,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 01:28:24,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 01:28:24,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 01:28:24,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 01:28:24,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 01:28:24,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 01:28:24,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 01:28:24,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 01:28:24,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 01:28:24,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 01:28:24,166 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 01:28:24,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 01:28:24,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 01:28:24,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 01:28:24,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 01:28:24,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 01:28:24,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 01:28:24,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 01:28:24,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 01:28:24,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 01:28:24,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 01:28:24,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 01:28:24,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 01:28:24,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 01:28:24,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 01:28:24,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 01:28:24,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 01:28:24,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 01:28:24,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 01:28:24,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 01:28:24,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 01:28:24,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 01:28:24,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-22 01:28:24,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 01:28:24,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 01:28:24,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 01:28:24,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 01:28:24,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 01:28:24,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 01:28:24,205 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 01:28:24,206 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 01:28:24,206 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 01:28:24,206 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 01:28:24,206 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 01:28:24,207 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 01:28:24,207 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 01:28:24,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 01:28:24,207 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 01:28:24,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 01:28:24,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 01:28:24,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 01:28:24,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 01:28:24,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 01:28:24,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 01:28:24,209 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 01:28:24,209 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 01:28:24,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 01:28:24,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 01:28:24,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 01:28:24,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 01:28:24,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 01:28:24,211 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 01:28:24,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fcb75d9c793adce3c2c2ca6d31453358360225b1f8596bb0dddfb529afd517e2 [2022-07-22 01:28:24,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 01:28:24,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 01:28:24,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 01:28:24,522 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 01:28:24,523 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 01:28:24,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2022-07-22 01:28:24,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bb23cf9d/fdebe6b9c9404d00bce5ed05d08b2d7a/FLAG27d7d6855 [2022-07-22 01:28:24,988 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 01:28:24,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2022-07-22 01:28:24,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bb23cf9d/fdebe6b9c9404d00bce5ed05d08b2d7a/FLAG27d7d6855 [2022-07-22 01:28:25,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bb23cf9d/fdebe6b9c9404d00bce5ed05d08b2d7a [2022-07-22 01:28:25,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 01:28:25,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 01:28:25,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 01:28:25,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 01:28:25,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 01:28:25,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23773f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25, skipping insertion in model container [2022-07-22 01:28:25,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 01:28:25,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 01:28:25,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:28:25,556 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 01:28:25,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:28:25,577 INFO L208 MainTranslator]: Completed translation [2022-07-22 01:28:25,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25 WrapperNode [2022-07-22 01:28:25,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 01:28:25,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 01:28:25,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 01:28:25,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 01:28:25,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,603 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-07-22 01:28:25,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 01:28:25,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 01:28:25,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 01:28:25,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 01:28:25,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 01:28:25,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 01:28:25,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 01:28:25,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 01:28:25,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25" (1/1) ... [2022-07-22 01:28:25,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:25,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:25,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:25,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-22 01:28:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 01:28:25,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 01:28:25,753 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 01:28:25,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 01:28:25,861 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 01:28:25,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 01:28:25,867 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 01:28:25,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:28:25 BoogieIcfgContainer [2022-07-22 01:28:25,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 01:28:25,869 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 01:28:25,870 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 01:28:25,872 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 01:28:25,872 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:28:25,873 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 01:28:25" (1/3) ... [2022-07-22 01:28:25,874 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f37119a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:28:25, skipping insertion in model container [2022-07-22 01:28:25,874 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:28:25,874 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:25" (2/3) ... [2022-07-22 01:28:25,875 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f37119a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:28:25, skipping insertion in model container [2022-07-22 01:28:25,875 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:28:25,875 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:28:25" (3/3) ... [2022-07-22 01:28:25,877 INFO L354 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3.c [2022-07-22 01:28:25,938 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 01:28:25,938 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-22 01:28:25,938 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 01:28:25,939 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 01:28:25,939 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 01:28:25,939 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-22 01:28:25,939 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 01:28:25,939 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 01:28:25,943 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) [2022-07-22 01:28:25,963 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-22 01:28:25,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:28:25,964 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:28:25,970 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 01:28:25,970 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:28:25,970 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 01:28:25,971 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) [2022-07-22 01:28:25,972 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-22 01:28:25,972 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:28:25,972 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:28:25,973 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 01:28:25,973 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:28:25,978 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#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; 9#L27-2true [2022-07-22 01:28:25,979 INFO L754 eck$LassoCheckResult]: Loop: 9#L27-2true assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 7#L19true assume !(main_~x~0#1 > 0); 5#L27true assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 9#L27-2true [2022-07-22 01:28:25,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:25,984 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-22 01:28:25,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:25,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329576251] [2022-07-22 01:28:25,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:25,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,062 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,095 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:26,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:26,098 INFO L85 PathProgramCache]: Analyzing trace with hash 41069, now seen corresponding path program 1 times [2022-07-22 01:28:26,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:26,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007113884] [2022-07-22 01:28:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,110 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,117 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:26,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:26,125 INFO L85 PathProgramCache]: Analyzing trace with hash 28700011, now seen corresponding path program 1 times [2022-07-22 01:28:26,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:26,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114360256] [2022-07-22 01:28:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:26,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,136 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:26,218 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:26,219 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:26,219 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:26,219 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:26,219 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:28:26,219 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:26,220 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:26,220 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:26,220 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2022-07-22 01:28:26,220 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:26,220 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:26,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:26,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:26,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:26,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:26,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:26,367 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:26,368 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:28:26,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:26,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:26,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:26,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-22 01:28:26,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:26,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:26,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:26,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:26,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:26,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:26,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-22 01:28:26,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:28:26,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:26,480 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:28:26,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:26,487 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:26,487 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:26,487 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:26,487 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:26,487 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:28:26,487 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:26,487 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:26,487 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:26,487 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2022-07-22 01:28:26,487 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:26,488 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:26,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:26,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:26,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:26,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:26,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:26,589 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:26,593 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:28:26,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:26,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:26,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:26,602 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:26,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:26,610 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:26,610 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:26,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:26,610 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:26,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:26,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:26,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-22 01:28:26,628 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:28:26,633 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:28:26,633 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-22 01:28:26,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:26,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:26,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:26,652 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:28:26,652 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:28:26,653 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:28:26,653 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 [] [2022-07-22 01:28:26,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-22 01:28:26,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:26,679 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:28:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:26,731 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:28:26,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:26,741 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:28:26,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:28:26,787 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-22 01:28:26,788 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) [2022-07-22 01:28:26,856 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 34 states and 50 transitions. Complement of second has 8 states. [2022-07-22 01:28:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:28:26,876 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) [2022-07-22 01:28:26,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-07-22 01:28:26,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2022-07-22 01:28:26,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:26,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-22 01:28:26,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:26,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2022-07-22 01:28:26,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:26,880 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2022-07-22 01:28:26,883 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-07-22 01:28:26,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 17 states and 26 transitions. [2022-07-22 01:28:26,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-07-22 01:28:26,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-07-22 01:28:26,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 26 transitions. [2022-07-22 01:28:26,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:28:26,887 INFO L369 hiAutomatonCegarLoop]: Abstraction has 17 states and 26 transitions. [2022-07-22 01:28:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 26 transitions. [2022-07-22 01:28:26,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-07-22 01:28:26,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.5) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:28:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2022-07-22 01:28:26,919 INFO L392 hiAutomatonCegarLoop]: Abstraction has 16 states and 24 transitions. [2022-07-22 01:28:26,919 INFO L374 stractBuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2022-07-22 01:28:26,919 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-22 01:28:26,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 24 transitions. [2022-07-22 01:28:26,920 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-07-22 01:28:26,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:28:26,921 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:28:26,921 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-22 01:28:26,921 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:28:26,921 INFO L752 eck$LassoCheckResult]: Stem: 87#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 88#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; 93#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 101#L19 [2022-07-22 01:28:26,922 INFO L754 eck$LassoCheckResult]: Loop: 101#L19 assume main_~x~0#1 > 0; 102#L20 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 100#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 101#L19 [2022-07-22 01:28:26,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:26,922 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-22 01:28:26,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:26,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639094044] [2022-07-22 01:28:26,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:26,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,927 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:26,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:26,946 INFO L85 PathProgramCache]: Analyzing trace with hash 43845, now seen corresponding path program 1 times [2022-07-22 01:28:26,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:26,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734514183] [2022-07-22 01:28:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:26,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,952 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,955 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:26,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:26,956 INFO L85 PathProgramCache]: Analyzing trace with hash 889692478, now seen corresponding path program 1 times [2022-07-22 01:28:26,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:26,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222287355] [2022-07-22 01:28:26,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:26,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,961 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:26,968 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:27,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,010 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:27,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:27,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:27,011 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:27,011 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:28:27,011 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,011 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:27,011 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:27,011 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2022-07-22 01:28:27,011 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:27,011 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:27,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,063 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:27,064 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:28:27,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,065 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-22 01:28:27,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:27,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:27,085 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:27,085 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:28:27,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,104 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-22 01:28:27,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:27,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:27,118 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:27,118 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: [] [2022-07-22 01:28:27,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,137 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-22 01:28:27,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:27,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:27,151 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:27,151 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:28:27,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-22 01:28:27,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:27,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:27,183 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:27,183 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: [] [2022-07-22 01:28:27,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,212 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-22 01:28:27,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:27,216 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:27,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,249 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-22 01:28:27,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:28:27,252 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:27,304 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:28:27,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,307 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:27,307 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:27,307 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:27,307 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:27,307 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:28:27,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:27,308 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:27,308 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2022-07-22 01:28:27,308 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:27,308 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:27,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,365 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:27,365 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:28:27,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,367 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,376 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:27,383 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:27,384 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:27,384 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:27,384 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:27,391 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:28:27,391 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:28:27,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-22 01:28:27,403 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:27,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,428 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-22 01:28:27,434 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:27,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:27,440 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:27,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:27,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:27,441 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:27,441 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:27,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:27,453 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:27,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,475 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-22 01:28:27,477 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:27,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:27,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:27,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:27,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:27,485 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:28:27,485 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:28:27,511 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:27,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,537 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,546 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:27,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:27,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:27,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:27,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:27,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:27,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:27,555 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:27,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-22 01:28:27,570 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:27,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,586 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-22 01:28:27,591 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:27,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:27,597 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:27,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:27,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:27,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:27,598 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:27,598 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:27,615 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:28:27,621 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:28:27,621 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-22 01:28:27,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,624 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-22 01:28:27,629 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:28:27,629 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:28:27,629 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:28:27,629 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 [] [2022-07-22 01:28:27,645 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 [2022-07-22 01:28:27,646 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:28:27,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:27,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:28:27,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:27,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:28:27,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:27,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:28:27,738 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-22 01:28:27,738 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11 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) [2022-07-22 01:28:27,758 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11. 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) Result 43 states and 71 transitions. Complement of second has 7 states. [2022-07-22 01:28:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:28:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-07-22 01:28:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-07-22 01:28:27,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 3 letters. [2022-07-22 01:28:27,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:27,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2022-07-22 01:28:27,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:27,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 6 letters. [2022-07-22 01:28:27,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:27,761 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 71 transitions. [2022-07-22 01:28:27,763 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-07-22 01:28:27,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 57 transitions. [2022-07-22 01:28:27,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2022-07-22 01:28:27,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-07-22 01:28:27,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 57 transitions. [2022-07-22 01:28:27,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:28:27,765 INFO L369 hiAutomatonCegarLoop]: Abstraction has 37 states and 57 transitions. [2022-07-22 01:28:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 57 transitions. [2022-07-22 01:28:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-07-22 01:28:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.606060606060606) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:28:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 53 transitions. [2022-07-22 01:28:27,769 INFO L392 hiAutomatonCegarLoop]: Abstraction has 33 states and 53 transitions. [2022-07-22 01:28:27,769 INFO L374 stractBuchiCegarLoop]: Abstraction has 33 states and 53 transitions. [2022-07-22 01:28:27,770 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-22 01:28:27,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 53 transitions. [2022-07-22 01:28:27,771 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-07-22 01:28:27,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:28:27,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:28:27,772 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-22 01:28:27,772 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:28:27,772 INFO L752 eck$LassoCheckResult]: Stem: 188#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 189#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; 194#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 202#L19 assume main_~x~0#1 > 0; 196#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; 199#L27-2 [2022-07-22 01:28:27,772 INFO L754 eck$LassoCheckResult]: Loop: 199#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 206#L19 assume main_~x~0#1 > 0; 204#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; 199#L27-2 [2022-07-22 01:28:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 28699755, now seen corresponding path program 1 times [2022-07-22 01:28:27,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:27,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320597233] [2022-07-22 01:28:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:27,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:27,783 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:27,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:27,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:27,790 INFO L85 PathProgramCache]: Analyzing trace with hash 40813, now seen corresponding path program 1 times [2022-07-22 01:28:27,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:27,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57633354] [2022-07-22 01:28:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:27,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:27,799 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:27,805 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:27,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:27,806 INFO L85 PathProgramCache]: Analyzing trace with hash 295920323, now seen corresponding path program 2 times [2022-07-22 01:28:27,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:27,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862466408] [2022-07-22 01:28:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:27,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:27,814 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:27,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:27,857 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:27,858 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:27,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:27,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:27,858 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:28:27,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:27,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:27,858 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2022-07-22 01:28:27,858 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:27,858 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:27,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:27,921 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:27,921 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:28:27,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,923 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:27,932 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:27,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-22 01:28:27,950 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:27,950 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: [] [2022-07-22 01:28:27,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:27,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,966 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:27,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-22 01:28:27,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:27,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:27,979 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:27,980 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:28:27,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-07-22 01:28:27,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:27,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:27,996 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-22 01:28:28,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:28,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:28,013 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:28,013 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:28:28,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:28,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,030 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-22 01:28:28,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:28,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:28,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:28,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,080 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:28:28,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:28,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-22 01:28:28,121 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:28:28,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:28,124 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:28,124 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:28,124 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:28,124 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:28,124 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:28:28,124 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,124 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:28,124 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:28,124 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2022-07-22 01:28:28,124 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:28,124 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:28,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,216 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:28,216 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:28:28,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,218 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,224 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:28,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:28,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:28,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:28,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:28,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:28,234 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:28,234 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:28,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-22 01:28:28,243 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:28,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:28,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,269 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,271 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:28,278 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:28,279 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:28,279 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:28,279 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-07-22 01:28:28,279 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:28,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-22 01:28:28,280 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-07-22 01:28:28,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:28,295 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:28,318 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 [2022-07-22 01:28:28,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,320 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,324 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:28,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:28,331 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:28,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:28,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:28,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:28,332 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:28,332 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:28,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-22 01:28:28,347 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:28:28,349 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-22 01:28:28,349 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:28:28,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,352 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,360 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:28:28,360 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:28:28,360 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:28:28,360 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 [] [2022-07-22 01:28:28,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-22 01:28:28,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:28,390 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:28:28,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:28,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:28:28,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:28,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:28:28,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:28:28,433 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-22 01:28:28,434 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 53 transitions. cyclomatic complexity: 26 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) [2022-07-22 01:28:28,453 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 53 transitions. cyclomatic complexity: 26. 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 49 states and 78 transitions. Complement of second has 8 states. [2022-07-22 01:28:28,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:28:28,454 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) [2022-07-22 01:28:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2022-07-22 01:28:28,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-22 01:28:28,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:28,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 8 letters. Loop has 3 letters. [2022-07-22 01:28:28,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:28,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 5 letters. Loop has 6 letters. [2022-07-22 01:28:28,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:28,456 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 78 transitions. [2022-07-22 01:28:28,458 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2022-07-22 01:28:28,460 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 44 states and 69 transitions. [2022-07-22 01:28:28,460 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 [2022-07-22 01:28:28,463 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2022-07-22 01:28:28,464 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-07-22 01:28:28,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 69 transitions. [2022-07-22 01:28:28,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:28:28,464 INFO L369 hiAutomatonCegarLoop]: Abstraction has 44 states and 69 transitions. [2022-07-22 01:28:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 69 transitions. [2022-07-22 01:28:28,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2022-07-22 01:28:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 41 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:28:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 66 transitions. [2022-07-22 01:28:28,471 INFO L392 hiAutomatonCegarLoop]: Abstraction has 42 states and 66 transitions. [2022-07-22 01:28:28,471 INFO L374 stractBuchiCegarLoop]: Abstraction has 42 states and 66 transitions. [2022-07-22 01:28:28,471 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-22 01:28:28,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 66 transitions. [2022-07-22 01:28:28,473 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2022-07-22 01:28:28,473 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:28:28,473 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:28:28,473 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2022-07-22 01:28:28,473 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:28:28,474 INFO L752 eck$LassoCheckResult]: Stem: 319#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 320#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; 325#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 348#L19 assume !(main_~x~0#1 > 0); 340#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; 339#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 334#L19 assume !(main_~x~0#1 > 0); 336#L27 [2022-07-22 01:28:28,474 INFO L754 eck$LassoCheckResult]: Loop: 336#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 360#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 358#L19 assume !(main_~x~0#1 > 0); 336#L27 [2022-07-22 01:28:28,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1810909080, now seen corresponding path program 1 times [2022-07-22 01:28:28,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:28,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027874143] [2022-07-22 01:28:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:28,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:28,480 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:28,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:28,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:28,484 INFO L85 PathProgramCache]: Analyzing trace with hash 54179, now seen corresponding path program 2 times [2022-07-22 01:28:28,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:28,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543181323] [2022-07-22 01:28:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:28,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:28,489 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:28,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:28,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash -291778388, now seen corresponding path program 1 times [2022-07-22 01:28:28,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:28,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663845931] [2022-07-22 01:28:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:28,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:28,498 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:28,503 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:28,524 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:28,525 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:28,525 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:28,525 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:28,525 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:28:28,525 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,525 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:28,525 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:28,525 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2022-07-22 01:28:28,526 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:28,526 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:28,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,579 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:28,579 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:28:28,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,581 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:28,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:28,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-22 01:28:28,600 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:28,601 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: [] [2022-07-22 01:28:28,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-07-22 01:28:28,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,617 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-22 01:28:28,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:28,619 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:28,637 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:28,637 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:28:28,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:28,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,654 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,660 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:28,660 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:28,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-22 01:28:28,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:28,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,682 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-07-22 01:28:28,687 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:28:28,687 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:28,750 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:28:28,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-07-22 01:28:28,754 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:28,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:28,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:28,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:28,755 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:28:28,755 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,755 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:28,755 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:28,755 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2022-07-22 01:28:28,755 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:28,755 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:28,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:28,819 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:28,819 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:28:28,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,824 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,832 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:28,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:28,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:28,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:28,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:28,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:28,840 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:28,840 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:28,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-07-22 01:28:28,851 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:28,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-07-22 01:28:28,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,874 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-07-22 01:28:28,875 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:28,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:28,881 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:28,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:28,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:28,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:28,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:28,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:28,898 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:28:28,900 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-22 01:28:28,900 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:28:28,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:28,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:28,904 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:28:28,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-07-22 01:28:28,912 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:28:28,912 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:28:28,912 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:28:28,912 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 [] [2022-07-22 01:28:28,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-07-22 01:28:28,929 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:28:28,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:28,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:28:28,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:28,961 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:28:28,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:28:28,971 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-22 01:28:28,972 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 66 transitions. cyclomatic complexity: 32 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) [2022-07-22 01:28:28,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-07-22 01:28:29,028 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 66 transitions. cyclomatic complexity: 32. 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 108 states and 160 transitions. Complement of second has 7 states. [2022-07-22 01:28:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:28:29,029 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) [2022-07-22 01:28:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2022-07-22 01:28:29,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-22 01:28:29,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:29,030 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:28:29,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:29,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:28:29,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:29,063 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:28:29,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:28:29,077 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 [2022-07-22 01:28:29,077 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 66 transitions. cyclomatic complexity: 32 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) [2022-07-22 01:28:29,115 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 66 transitions. cyclomatic complexity: 32. 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 108 states and 160 transitions. Complement of second has 7 states. [2022-07-22 01:28:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:28:29,117 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) [2022-07-22 01:28:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2022-07-22 01:28:29,119 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-22 01:28:29,119 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:29,120 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:28:29,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:29,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:28:29,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:29,147 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:28:29,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:28:29,156 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 [2022-07-22 01:28:29,156 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 66 transitions. cyclomatic complexity: 32 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) [2022-07-22 01:28:29,180 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 66 transitions. cyclomatic complexity: 32. 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 109 states and 163 transitions. Complement of second has 8 states. [2022-07-22 01:28:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:28:29,181 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) [2022-07-22 01:28:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2022-07-22 01:28:29,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-22 01:28:29,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:29,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-22 01:28:29,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:29,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-22 01:28:29,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:29,182 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 163 transitions. [2022-07-22 01:28:29,185 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 27 [2022-07-22 01:28:29,186 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 98 states and 149 transitions. [2022-07-22 01:28:29,186 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2022-07-22 01:28:29,187 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2022-07-22 01:28:29,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 149 transitions. [2022-07-22 01:28:29,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:28:29,187 INFO L369 hiAutomatonCegarLoop]: Abstraction has 98 states and 149 transitions. [2022-07-22 01:28:29,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 149 transitions. [2022-07-22 01:28:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 80. [2022-07-22 01:28:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 80 states have (on average 1.5875) internal successors, (127), 79 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:28:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 127 transitions. [2022-07-22 01:28:29,194 INFO L392 hiAutomatonCegarLoop]: Abstraction has 80 states and 127 transitions. [2022-07-22 01:28:29,194 INFO L374 stractBuchiCegarLoop]: Abstraction has 80 states and 127 transitions. [2022-07-22 01:28:29,194 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-22 01:28:29,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 127 transitions. [2022-07-22 01:28:29,196 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2022-07-22 01:28:29,196 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:28:29,196 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:28:29,196 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-07-22 01:28:29,196 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:28:29,196 INFO L752 eck$LassoCheckResult]: Stem: 819#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 820#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; 830#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 854#L19 assume main_~x~0#1 > 0; 877#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; 893#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 868#L19 assume !(main_~x~0#1 > 0); 892#L27 [2022-07-22 01:28:29,197 INFO L754 eck$LassoCheckResult]: Loop: 892#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; 823#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 894#L19 assume !(main_~x~0#1 > 0); 892#L27 [2022-07-22 01:28:29,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1810661142, now seen corresponding path program 1 times [2022-07-22 01:28:29,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:29,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140045003] [2022-07-22 01:28:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:29,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:28:29,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 01:28:29,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140045003] [2022-07-22 01:28:29,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140045003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 01:28:29,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 01:28:29,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 01:28:29,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000566585] [2022-07-22 01:28:29,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 01:28:29,241 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-22 01:28:29,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:29,242 INFO L85 PathProgramCache]: Analyzing trace with hash 56101, now seen corresponding path program 1 times [2022-07-22 01:28:29,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:29,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854921201] [2022-07-22 01:28:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:29,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:29,248 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:29,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:29,274 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:29,274 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:29,274 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:29,274 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:29,275 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:28:29,275 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,275 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:29,275 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:29,275 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2022-07-22 01:28:29,275 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:29,275 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:29,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:29,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:29,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:29,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:29,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:29,330 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:29,330 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:28:29,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:29,332 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) [2022-07-22 01:28:29,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:29,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:29,354 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 [2022-07-22 01:28:29,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:29,368 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=-8, ULTIMATE.start_main_#t~nondet5#1=-8} Honda state: {ULTIMATE.start_main_~x~0#1=-8, ULTIMATE.start_main_#t~nondet5#1=-8} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:28:29,392 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 [2022-07-22 01:28:29,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:29,395 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) [2022-07-22 01:28:29,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:29,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:29,412 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 [2022-07-22 01:28:29,423 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:29,423 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4#1=0} Honda state: {ULTIMATE.start_main_#t~nondet4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:28:29,447 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 [2022-07-22 01:28:29,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:29,448 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) [2022-07-22 01:28:29,449 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 [2022-07-22 01:28:29,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:29,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:29,462 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:29,462 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: [] [2022-07-22 01:28:29,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-07-22 01:28:29,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:29,478 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) [2022-07-22 01:28:29,478 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 [2022-07-22 01:28:29,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:29,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:29,490 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:29,490 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: [] [2022-07-22 01:28:29,505 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 [2022-07-22 01:28:29,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:29,506 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) [2022-07-22 01:28:29,510 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 [2022-07-22 01:28:29,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:29,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:29,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-07-22 01:28:29,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:29,535 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) [2022-07-22 01:28:29,536 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 [2022-07-22 01:28:29,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:28:29,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:29,604 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:28:29,607 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 [2022-07-22 01:28:29,608 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:29,608 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:29,608 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:29,608 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:29,608 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:28:29,608 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,608 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:29,608 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:29,608 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2022-07-22 01:28:29,608 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:29,608 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:29,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:29,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:29,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:29,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:29,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:29,682 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:29,682 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:28:29,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:29,684 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) [2022-07-22 01:28:29,688 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:29,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:29,695 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:29,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:29,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:29,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:29,696 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:29,696 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:29,698 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 [2022-07-22 01:28:29,706 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:29,729 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 [2022-07-22 01:28:29,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:29,731 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) [2022-07-22 01:28:29,732 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 [2022-07-22 01:28:29,733 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:29,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:29,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:29,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:29,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:29,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:29,740 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:29,740 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:29,741 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:29,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-07-22 01:28:29,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:29,757 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) [2022-07-22 01:28:29,760 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:29,761 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 [2022-07-22 01:28:29,766 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:29,766 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:29,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:29,766 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:29,768 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:28:29,768 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:28:29,795 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:29,817 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 [2022-07-22 01:28:29,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:29,818 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) [2022-07-22 01:28:29,823 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:29,827 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 [2022-07-22 01:28:29,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:29,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:29,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:29,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:29,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:29,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:29,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:29,846 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:28:29,847 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-22 01:28:29,847 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:28:29,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:29,852 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) [2022-07-22 01:28:29,853 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 [2022-07-22 01:28:29,854 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:28:29,854 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:28:29,854 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:28:29,854 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 [] [2022-07-22 01:28:29,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-07-22 01:28:29,876 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:28:29,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:29,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:28:29,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:29,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:28:29,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:28:29,928 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-22 01:28:29,928 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 80 states and 127 transitions. cyclomatic complexity: 57 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) [2022-07-22 01:28:29,956 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 80 states and 127 transitions. cyclomatic complexity: 57. 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 196 states and 321 transitions. Complement of second has 7 states. [2022-07-22 01:28:29,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:28:29,958 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) [2022-07-22 01:28:29,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2022-07-22 01:28:29,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-22 01:28:29,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:29,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-22 01:28:29,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:29,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-22 01:28:29,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:29,960 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 321 transitions. [2022-07-22 01:28:29,964 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2022-07-22 01:28:29,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 145 states and 231 transitions. [2022-07-22 01:28:29,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2022-07-22 01:28:29,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-07-22 01:28:29,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 231 transitions. [2022-07-22 01:28:29,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:28:29,966 INFO L369 hiAutomatonCegarLoop]: Abstraction has 145 states and 231 transitions. [2022-07-22 01:28:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 231 transitions. [2022-07-22 01:28:29,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2022-07-22 01:28:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 119 states have (on average 1.638655462184874) internal successors, (195), 118 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:28:29,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 195 transitions. [2022-07-22 01:28:29,975 INFO L392 hiAutomatonCegarLoop]: Abstraction has 119 states and 195 transitions. [2022-07-22 01:28:29,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 01:28:29,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 01:28:29,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 01:28:29,978 INFO L87 Difference]: Start difference. First operand 119 states and 195 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2022-07-22 01:28:29,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 01:28:29,992 INFO L93 Difference]: Finished difference Result 82 states and 121 transitions. [2022-07-22 01:28:29,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 01:28:29,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 121 transitions. [2022-07-22 01:28:29,994 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:28:29,995 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 65 states and 95 transitions. [2022-07-22 01:28:29,995 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2022-07-22 01:28:29,995 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2022-07-22 01:28:29,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 95 transitions. [2022-07-22 01:28:29,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:28:29,996 INFO L369 hiAutomatonCegarLoop]: Abstraction has 65 states and 95 transitions. [2022-07-22 01:28:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 95 transitions. [2022-07-22 01:28:29,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 42. [2022-07-22 01:28:29,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:28:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 64 transitions. [2022-07-22 01:28:29,999 INFO L392 hiAutomatonCegarLoop]: Abstraction has 42 states and 64 transitions. [2022-07-22 01:28:29,999 INFO L374 stractBuchiCegarLoop]: Abstraction has 42 states and 64 transitions. [2022-07-22 01:28:29,999 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-22 01:28:29,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 64 transitions. [2022-07-22 01:28:30,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:28:30,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:28:30,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:28:30,000 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2022-07-22 01:28:30,000 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:28:30,001 INFO L752 eck$LassoCheckResult]: Stem: 1351#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1352#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 1361#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1376#L19 assume main_~x~0#1 > 0; 1372#L20 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1391#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1367#L19 [2022-07-22 01:28:30,001 INFO L754 eck$LassoCheckResult]: Loop: 1367#L19 assume main_~x~0#1 > 0; 1362#L20 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 1363#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1367#L19 [2022-07-22 01:28:30,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:30,001 INFO L85 PathProgramCache]: Analyzing trace with hash 889692416, now seen corresponding path program 3 times [2022-07-22 01:28:30,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:30,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478757229] [2022-07-22 01:28:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:30,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:30,006 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:30,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:30,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:30,013 INFO L85 PathProgramCache]: Analyzing trace with hash 43845, now seen corresponding path program 2 times [2022-07-22 01:28:30,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:30,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98008719] [2022-07-22 01:28:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:30,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:30,016 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:30,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash 583595494, now seen corresponding path program 1 times [2022-07-22 01:28:30,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:30,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739510747] [2022-07-22 01:28:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:30,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:30,039 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:30,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:30,068 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:30,069 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:30,069 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:30,069 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:30,069 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:28:30,069 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:30,069 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:30,069 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:30,069 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2022-07-22 01:28:30,070 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:30,070 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:30,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:30,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:30,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:30,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:30,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:30,130 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 [2022-07-22 01:28:30,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:30,144 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:28:30,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:30,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:30,146 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) [2022-07-22 01:28:30,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:30,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:30,170 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 [2022-07-22 01:28:30,174 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:30,174 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: [] [2022-07-22 01:28:30,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-07-22 01:28:30,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:30,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:30,196 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) [2022-07-22 01:28:30,196 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 [2022-07-22 01:28:30,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:30,199 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:30,210 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:30,210 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:28:30,226 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 [2022-07-22 01:28:30,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:30,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:30,228 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) [2022-07-22 01:28:30,228 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 [2022-07-22 01:28:30,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:30,230 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:30,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:28:30,247 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:28:30,262 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 [2022-07-22 01:28:30,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:30,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:30,264 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) [2022-07-22 01:28:30,265 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 [2022-07-22 01:28:30,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:28:30,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:30,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2022-07-22 01:28:30,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:30,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:30,289 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) [2022-07-22 01:28:30,290 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 [2022-07-22 01:28:30,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:28:30,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:28:30,364 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:28:30,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2022-07-22 01:28:30,367 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:28:30,367 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:28:30,367 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:28:30,367 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:28:30,367 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:28:30,367 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:30,367 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:28:30,367 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:28:30,367 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2022-07-22 01:28:30,367 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:28:30,367 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:28:30,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:30,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:30,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:30,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:30,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:28:30,414 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:28:30,415 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:28:30,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:30,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:30,416 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) [2022-07-22 01:28:30,423 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:30,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:30,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:30,431 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 [2022-07-22 01:28:30,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:30,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:30,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:30,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:30,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:30,435 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:30,450 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 [2022-07-22 01:28:30,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:30,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:30,451 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) [2022-07-22 01:28:30,460 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:28:30,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:30,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:30,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:30,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:30,469 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:28:30,469 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:28:30,472 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 [2022-07-22 01:28:30,483 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:28:30,505 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 [2022-07-22 01:28:30,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:30,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:30,507 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) [2022-07-22 01:28:30,509 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 [2022-07-22 01:28:30,512 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 [2022-07-22 01:28:30,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:28:30,519 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:28:30,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:28:30,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:28:30,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:28:30,520 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:28:30,520 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:28:30,534 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:28:30,535 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-22 01:28:30,535 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:28:30,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:30,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:30,540 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) [2022-07-22 01:28:30,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:28:30,547 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:28:30,548 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:28:30,548 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 [] [2022-07-22 01:28:30,568 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 [2022-07-22 01:28:30,570 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 [2022-07-22 01:28:30,570 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:28:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:30,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:28:30,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:30,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:28:30,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:28:30,604 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 [2022-07-22 01:28:30,605 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 64 transitions. cyclomatic complexity: 29 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) [2022-07-22 01:28:30,625 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 64 transitions. cyclomatic complexity: 29. 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 77 states and 124 transitions. Complement of second has 7 states. [2022-07-22 01:28:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:28:30,626 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) [2022-07-22 01:28:30,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-07-22 01:28:30,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2022-07-22 01:28:30,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:30,627 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:28:30,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:30,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:28:30,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:30,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:28:30,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:28:30,657 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 [2022-07-22 01:28:30,657 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 64 transitions. cyclomatic complexity: 29 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) [2022-07-22 01:28:30,672 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 64 transitions. cyclomatic complexity: 29. 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 77 states and 124 transitions. Complement of second has 7 states. [2022-07-22 01:28:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:28:30,673 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) [2022-07-22 01:28:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-07-22 01:28:30,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2022-07-22 01:28:30,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:30,673 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:28:30,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:30,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:28:30,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:28:30,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:28:30,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:28:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:28:30,702 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 [2022-07-22 01:28:30,702 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 64 transitions. cyclomatic complexity: 29 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) [2022-07-22 01:28:30,715 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 64 transitions. cyclomatic complexity: 29. 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 81 states and 129 transitions. Complement of second has 8 states. [2022-07-22 01:28:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:28:30,717 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) [2022-07-22 01:28:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2022-07-22 01:28:30,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 6 letters. Loop has 3 letters. [2022-07-22 01:28:30,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:30,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 3 letters. [2022-07-22 01:28:30,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:30,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 6 letters. Loop has 6 letters. [2022-07-22 01:28:30,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:28:30,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 129 transitions. [2022-07-22 01:28:30,719 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:28:30,719 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 0 states and 0 transitions. [2022-07-22 01:28:30,720 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-22 01:28:30,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-22 01:28:30,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-22 01:28:30,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 01:28:30,720 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:28:30,720 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:28:30,720 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:28:30,720 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-22 01:28:30,720 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-22 01:28:30,721 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:28:30,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-22 01:28:30,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 01:28:30 BoogieIcfgContainer [2022-07-22 01:28:30,726 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 01:28:30,727 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 01:28:30,727 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 01:28:30,727 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 01:28:30,728 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:28:25" (3/4) ... [2022-07-22 01:28:30,730 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 01:28:30,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 01:28:30,730 INFO L158 Benchmark]: Toolchain (without parser) took 5291.90ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 40.8MB in the beginning and 27.1MB in the end (delta: 13.6MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2022-07-22 01:28:30,731 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 60.8MB. Free memory was 42.6MB in the beginning and 42.5MB in the end (delta: 66.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:28:30,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 136.98ms. Allocated memory is still 60.8MB. Free memory was 40.5MB in the beginning and 31.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 01:28:30,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.60ms. Allocated memory is still 60.8MB. Free memory was 31.7MB in the beginning and 30.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 01:28:30,732 INFO L158 Benchmark]: Boogie Preprocessor took 14.95ms. Allocated memory is still 60.8MB. Free memory was 30.3MB in the beginning and 29.4MB in the end (delta: 925.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:28:30,732 INFO L158 Benchmark]: RCFGBuilder took 245.44ms. Allocated memory is still 60.8MB. Free memory was 29.4MB in the beginning and 42.4MB in the end (delta: -13.0MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-07-22 01:28:30,732 INFO L158 Benchmark]: BuchiAutomizer took 4857.08ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 42.4MB in the beginning and 27.6MB in the end (delta: 14.7MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2022-07-22 01:28:30,733 INFO L158 Benchmark]: Witness Printer took 2.89ms. Allocated memory is still 73.4MB. Free memory was 27.6MB in the beginning and 27.1MB in the end (delta: 484.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:28:30,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 60.8MB. Free memory was 42.6MB in the beginning and 42.5MB in the end (delta: 66.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 136.98ms. Allocated memory is still 60.8MB. Free memory was 40.5MB in the beginning and 31.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.60ms. Allocated memory is still 60.8MB. Free memory was 31.7MB in the beginning and 30.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.95ms. Allocated memory is still 60.8MB. Free memory was 30.3MB in the beginning and 29.4MB in the end (delta: 925.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 245.44ms. Allocated memory is still 60.8MB. Free memory was 29.4MB in the beginning and 42.4MB in the end (delta: -13.0MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 4857.08ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 42.4MB in the beginning and 27.6MB in the end (delta: 14.7MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Witness Printer took 2.89ms. Allocated memory is still 73.4MB. Free memory was 27.6MB in the beginning and 27.1MB in the end (delta: 484.9kB). 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 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic 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. One nondeterministic module has affine ranking function y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.8s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 3.7s. 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 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 74 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 143 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 100 mSDtfsCounter, 146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax161 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf94 smp84 dnf100 smp100 tf113 neg98 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-22 01:28:30,760 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 [2022-07-22 01:28:30,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE