./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 9a8b2e8d 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_1.3.100.v20150511-1540.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 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:34:34,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:34:34,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:34:34,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:34:34,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:34:34,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:34:34,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:34:34,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:34:34,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:34:34,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:34:34,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:34:34,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:34:34,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:34:34,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:34:34,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:34:34,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:34:34,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:34:34,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:34:34,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:34:34,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:34:34,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:34:34,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:34:34,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:34:34,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:34:34,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:34:34,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:34:34,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:34:34,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:34:34,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:34:34,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:34:34,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:34:34,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:34:34,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:34:34,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:34:34,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:34:34,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:34:34,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:34:34,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:34:34,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:34:34,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:34:34,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:34:34,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:34:34,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:34:34,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:34:34,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:34:34,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:34:34,890 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:34:34,891 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:34:34,891 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:34:34,891 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:34:34,891 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:34:34,891 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:34:34,892 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:34:34,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:34:34,892 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:34:34,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:34:34,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:34:34,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:34:34,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:34:34,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:34:34,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:34:34,893 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:34:34,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:34:34,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:34:34,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:34:34,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:34:34,894 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:34:34,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:34:34,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:34:34,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:34:34,895 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:34:34,898 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:34:34,898 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 [2020-10-20 06:34:35,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:34:35,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:34:35,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:34:35,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:34:35,133 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:34:35,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2020-10-20 06:34:35,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5ee8125/c86f6a68c0d5483f88066ecd0979cafc/FLAG3e54196bd [2020-10-20 06:34:35,754 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:34:35,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2020-10-20 06:34:35,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5ee8125/c86f6a68c0d5483f88066ecd0979cafc/FLAG3e54196bd [2020-10-20 06:34:36,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5ee8125/c86f6a68c0d5483f88066ecd0979cafc [2020-10-20 06:34:36,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:34:36,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:34:36,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:36,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:34:36,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:34:36,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:36" (1/1) ... [2020-10-20 06:34:36,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f208be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36, skipping insertion in model container [2020-10-20 06:34:36,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:36" (1/1) ... [2020-10-20 06:34:36,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:34:36,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:34:36,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:36,409 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:34:36,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:36,435 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:34:36,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36 WrapperNode [2020-10-20 06:34:36,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:36,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:36,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:34:36,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:34:36,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36" (1/1) ... [2020-10-20 06:34:36,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36" (1/1) ... [2020-10-20 06:34:36,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:36,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:34:36,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:34:36,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:34:36,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36" (1/1) ... [2020-10-20 06:34:36,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36" (1/1) ... [2020-10-20 06:34:36,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36" (1/1) ... [2020-10-20 06:34:36,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36" (1/1) ... [2020-10-20 06:34:36,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36" (1/1) ... [2020-10-20 06:34:36,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36" (1/1) ... [2020-10-20 06:34:36,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36" (1/1) ... [2020-10-20 06:34:36,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:34:36,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:34:36,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:34:36,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:34:36,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:36,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:34:36,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:34:36,700 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:34:36,700 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:34:36,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:36 BoogieIcfgContainer [2020-10-20 06:34:36,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:34:36,703 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:34:36,703 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:34:36,707 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:34:36,708 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:36,708 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:34:36" (1/3) ... [2020-10-20 06:34:36,709 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37afe293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:36, skipping insertion in model container [2020-10-20 06:34:36,709 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:36,709 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:36" (2/3) ... [2020-10-20 06:34:36,709 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37afe293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:36, skipping insertion in model container [2020-10-20 06:34:36,710 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:36,710 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:36" (3/3) ... [2020-10-20 06:34:36,711 INFO L373 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3.c [2020-10-20 06:34:36,764 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:34:36,764 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:34:36,765 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:34:36,765 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:34:36,765 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:34:36,765 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:34:36,766 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:34:36,766 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:34:36,788 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-20 06:34:36,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:34:36,818 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:36,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:36,829 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:34:36,829 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:36,829 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:34:36,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-20 06:34:36,831 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:34:36,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:36,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:36,832 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:34:36,832 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:36,843 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 10#L27-2true [2020-10-20 06:34:36,843 INFO L796 eck$LassoCheckResult]: Loop: 10#L27-2true assume !!(0 != main_~x~0 && main_~y~0 > 0); 7#L19true assume !(main_~x~0 > 0); 5#L27true assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 10#L27-2true [2020-10-20 06:34:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:36,850 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:34:36,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:36,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745878174] [2020-10-20 06:34:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:36,953 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:36,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:36,971 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:36,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:36,973 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 1 times [2020-10-20 06:34:36,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:36,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592089309] [2020-10-20 06:34:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:36,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:36,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:36,990 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:36,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:36,992 INFO L82 PathProgramCache]: Analyzing trace with hash 963597, now seen corresponding path program 1 times [2020-10-20 06:34:36,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:36,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635304471] [2020-10-20 06:34:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:37,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:37,008 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:37,011 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:37,090 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:37,091 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:37,091 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:37,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:37,091 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:37,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:37,092 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:37,092 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2020-10-20 06:34:37,092 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:37,092 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:37,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:37,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:37,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:37,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:37,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:37,297 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:37,297 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:37,316 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:37,325 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:37,325 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,349 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:37,349 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:37,354 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:37,355 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,378 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:37,378 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:37,382 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:37,382 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,407 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:37,407 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:37,410 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:37,411 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=7} Honda state: {ULTIMATE.start_main_#t~nondet4=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:37,433 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:37,461 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:37,500 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:37,506 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:37,506 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:37,506 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:37,506 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:37,506 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:37,507 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,507 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:37,507 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:37,507 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2020-10-20 06:34:37,507 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:37,507 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:37,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:37,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:37,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:37,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:37,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:37,651 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:37,658 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:37,675 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:37,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:37,678 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:37,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:37,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:37,704 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:37,705 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,716 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:37,756 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:37,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:37,758 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:37,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:37,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:37,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:37,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:37,763 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,806 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:37,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:37,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:37,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:37,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:37,815 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:37,816 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:37,821 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,861 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:37,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:37,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:37,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:37,864 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:34:37,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:37,866 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 06:34:37,866 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:37,869 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:37,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:37,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:37,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:37,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:37,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:37,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:37,917 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:37,917 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,920 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:37,925 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:34:37,925 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:37,932 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:37,932 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:37,932 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:37,933 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:37,959 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:37,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:37,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:38,009 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:38,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:38,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:38,040 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 [2020-10-20 06:34:38,041 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2020-10-20 06:34:38,141 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 33 states and 49 transitions. Complement of second has 8 states. [2020-10-20 06:34:38,141 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 [2020-10-20 06:34:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2020-10-20 06:34:38,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2020-10-20 06:34:38,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:38,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:34:38,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:38,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2020-10-20 06:34:38,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:38,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2020-10-20 06:34:38,153 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-20 06:34:38,157 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 16 states and 25 transitions. [2020-10-20 06:34:38,158 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:34:38,159 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 06:34:38,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 25 transitions. [2020-10-20 06:34:38,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:38,160 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 25 transitions. [2020-10-20 06:34:38,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 25 transitions. [2020-10-20 06:34:38,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-20 06:34:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 06:34:38,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2020-10-20 06:34:38,190 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-10-20 06:34:38,190 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-10-20 06:34:38,191 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:34:38,191 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2020-10-20 06:34:38,192 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-20 06:34:38,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:38,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:38,192 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:34:38,192 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:38,193 INFO L794 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 83#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 94#L19 [2020-10-20 06:34:38,193 INFO L796 eck$LassoCheckResult]: Loop: 94#L19 assume main_~x~0 > 0; 95#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 96#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 94#L19 [2020-10-20 06:34:38,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:38,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-20 06:34:38,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:38,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225578684] [2020-10-20 06:34:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:38,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:38,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:38,202 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:38,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:38,203 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 1 times [2020-10-20 06:34:38,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:38,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830025402] [2020-10-20 06:34:38,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:38,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:38,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:38,213 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:38,213 INFO L82 PathProgramCache]: Analyzing trace with hash 29863643, now seen corresponding path program 1 times [2020-10-20 06:34:38,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:38,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648029687] [2020-10-20 06:34:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:38,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:38,224 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:38,225 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:38,255 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:38,256 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:38,256 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:38,256 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:38,256 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:38,256 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:38,256 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:38,256 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:38,256 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2020-10-20 06:34:38,257 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:38,257 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:38,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:38,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:38,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:38,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:38,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:38,340 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:38,340 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:38,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:38,346 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:38,350 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:38,350 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:38,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:38,375 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:38,382 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:38,382 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:38,407 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:38,407 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:38,413 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:38,413 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:38,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:38,463 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:38,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:38,511 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:38,602 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:38,605 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:38,605 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:38,606 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:38,606 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:38,606 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:38,606 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:38,606 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:38,606 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:38,606 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2020-10-20 06:34:38,607 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:38,607 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:38,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:38,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:38,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:38,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:38,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:38,703 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:38,703 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:38,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:38,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:38,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:38,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:38,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:38,717 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:38,717 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:38,722 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:38,773 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:38,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:38,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:38,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:38,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:38,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:38,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:38,782 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:38,832 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:38,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:38,834 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:38,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:38,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:38,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:38,835 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:38,836 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:38,838 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:38,868 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:38,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:38,870 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:38,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:38,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:38,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:38,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:38,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:38,887 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:38,892 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:38,893 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:38,896 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:38,897 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:38,897 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:38,897 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:38,927 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:38,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:38,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:38,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:38,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:38,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:38,997 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 [2020-10-20 06:34:38,997 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-10-20 06:34:39,048 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 42 states and 70 transitions. Complement of second has 7 states. [2020-10-20 06:34:39,051 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 [2020-10-20 06:34:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:39,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:34:39,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 3 letters. [2020-10-20 06:34:39,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:39,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-20 06:34:39,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:39,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 6 letters. [2020-10-20 06:34:39,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:39,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 70 transitions. [2020-10-20 06:34:39,056 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-20 06:34:39,058 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 56 transitions. [2020-10-20 06:34:39,058 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-10-20 06:34:39,058 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-20 06:34:39,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 56 transitions. [2020-10-20 06:34:39,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:39,059 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-20 06:34:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 56 transitions. [2020-10-20 06:34:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-20 06:34:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 06:34:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 52 transitions. [2020-10-20 06:34:39,066 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2020-10-20 06:34:39,066 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2020-10-20 06:34:39,067 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:34:39,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 52 transitions. [2020-10-20 06:34:39,071 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-20 06:34:39,071 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:39,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:39,072 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:34:39,072 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:39,072 INFO L794 eck$LassoCheckResult]: Stem: 178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 179#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 189#L19 assume main_~x~0 > 0; 185#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 192#L27-2 [2020-10-20 06:34:39,072 INFO L796 eck$LassoCheckResult]: Loop: 192#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 209#L19 assume !(main_~x~0 > 0); 208#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 192#L27-2 [2020-10-20 06:34:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:39,073 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2020-10-20 06:34:39,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:39,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317763203] [2020-10-20 06:34:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,093 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:39,094 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 2 times [2020-10-20 06:34:39,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:39,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400782096] [2020-10-20 06:34:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,103 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:39,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:39,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869056, now seen corresponding path program 1 times [2020-10-20 06:34:39,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:39,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264865855] [2020-10-20 06:34:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:39,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264865855] [2020-10-20 06:34:39,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:34:39,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:34:39,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594561422] [2020-10-20 06:34:39,238 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:39,238 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:39,238 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:39,239 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:39,239 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:39,239 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,239 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:39,239 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:39,239 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2020-10-20 06:34:39,239 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:39,239 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:39,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:39,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:39,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:39,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:39,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:39,339 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:39,339 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:39,349 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:39,350 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,358 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:39,359 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:39,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:39,405 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,410 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:39,410 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=7} Honda state: {ULTIMATE.start_main_#t~nondet4=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:39,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:39,446 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,450 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:39,451 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:39,489 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:39,489 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:39,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:39,534 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,574 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:39,576 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:39,576 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:39,576 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:39,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:39,576 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:39,576 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,576 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:39,576 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:39,577 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2020-10-20 06:34:39,577 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:39,577 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:39,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:39,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:39,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:39,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:39,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:39,672 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:39,672 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,687 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:39,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:39,688 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:39,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:39,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:39,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:39,689 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:39,689 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:39,691 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,715 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:39,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:39,716 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:39,716 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:39,716 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:34:39,716 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:39,718 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 06:34:39,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:39,723 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,746 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:39,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:39,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:39,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:39,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:39,751 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:39,751 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:39,761 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,793 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:39,795 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:39,795 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:39,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:39,795 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:39,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:39,796 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:39,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:39,801 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:39,811 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:39,812 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,814 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:39,814 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:39,814 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:39,814 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-20 06:34:39,834 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:39,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:39,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:39,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:39,858 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:39,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:39,868 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 [2020-10-20 06:34:39,868 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26 Second operand 4 states. [2020-10-20 06:34:39,892 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 43 states and 69 transitions. Complement of second has 7 states. [2020-10-20 06:34:39,892 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 [2020-10-20 06:34:39,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-10-20 06:34:39,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:34:39,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:39,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:34:39,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:39,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-20 06:34:39,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:39,894 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 69 transitions. [2020-10-20 06:34:39,897 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-10-20 06:34:39,898 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 69 transitions. [2020-10-20 06:34:39,898 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-10-20 06:34:39,899 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2020-10-20 06:34:39,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 69 transitions. [2020-10-20 06:34:39,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:39,899 INFO L691 BuchiCegarLoop]: Abstraction has 43 states and 69 transitions. [2020-10-20 06:34:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 69 transitions. [2020-10-20 06:34:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-20 06:34:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-20 06:34:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 67 transitions. [2020-10-20 06:34:39,905 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 67 transitions. [2020-10-20 06:34:39,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:34:39,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:34:39,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:34:39,910 INFO L87 Difference]: Start difference. First operand 42 states and 67 transitions. Second operand 4 states. [2020-10-20 06:34:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:34:39,936 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2020-10-20 06:34:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:34:39,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2020-10-20 06:34:39,938 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-10-20 06:34:39,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 53 transitions. [2020-10-20 06:34:39,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-10-20 06:34:39,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-20 06:34:39,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 53 transitions. [2020-10-20 06:34:39,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:39,940 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2020-10-20 06:34:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 53 transitions. [2020-10-20 06:34:39,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-10-20 06:34:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 06:34:39,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2020-10-20 06:34:39,944 INFO L714 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2020-10-20 06:34:39,944 INFO L594 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2020-10-20 06:34:39,944 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:34:39,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 43 transitions. [2020-10-20 06:34:39,945 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:34:39,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:39,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:39,946 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:34:39,946 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:39,947 INFO L794 eck$LassoCheckResult]: Stem: 384#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 385#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 410#L19 assume main_~x~0 > 0; 395#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 393#L27-2 [2020-10-20 06:34:39,947 INFO L796 eck$LassoCheckResult]: Loop: 393#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 390#L19 assume main_~x~0 > 0; 391#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 393#L27-2 [2020-10-20 06:34:39,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:39,947 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 2 times [2020-10-20 06:34:39,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:39,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984385292] [2020-10-20 06:34:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,953 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,958 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:39,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:39,959 INFO L82 PathProgramCache]: Analyzing trace with hash 39820, now seen corresponding path program 1 times [2020-10-20 06:34:39,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:39,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719708515] [2020-10-20 06:34:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,977 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:39,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:39,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869312, now seen corresponding path program 3 times [2020-10-20 06:34:39,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:39,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244668277] [2020-10-20 06:34:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,995 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,000 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:40,046 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:40,046 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:40,046 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:40,046 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:40,046 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:40,046 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,046 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:40,046 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:40,047 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2020-10-20 06:34:40,047 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:40,047 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:40,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,122 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:40,122 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:40,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:40,130 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,133 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:40,134 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:40,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:40,172 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,178 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:40,178 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=4, ULTIMATE.start_main_#t~nondet3=4} Honda state: {ULTIMATE.start_main_~y~0=4, ULTIMATE.start_main_#t~nondet3=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:40,200 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:40,225 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:40,248 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:40,249 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:40,249 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:40,249 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:40,249 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:40,250 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:40,250 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,250 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:40,250 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:40,250 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2020-10-20 06:34:40,258 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:40,258 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:40,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,349 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:40,349 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,352 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:40,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:40,354 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:40,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:40,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:40,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:40,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:40,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:40,358 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,384 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:40,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:40,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:40,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:40,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:40,388 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:40,388 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:40,396 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:40,441 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:40,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:40,443 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:40,443 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:40,443 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:40,443 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:40,444 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:40,444 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,451 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:40,456 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:40,457 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,469 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:40,470 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:40,470 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:40,470 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-20 06:34:40,498 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:40,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:40,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:40,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:40,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:40,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:40,528 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 [2020-10-20 06:34:40,528 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21 Second operand 4 states. [2020-10-20 06:34:40,577 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 35 states and 52 transitions. Complement of second has 6 states. [2020-10-20 06:34:40,577 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 [2020-10-20 06:34:40,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-10-20 06:34:40,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:34:40,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:40,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:34:40,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:40,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-20 06:34:40,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:40,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 52 transitions. [2020-10-20 06:34:40,581 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:34:40,582 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 52 transitions. [2020-10-20 06:34:40,582 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-20 06:34:40,582 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-20 06:34:40,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 52 transitions. [2020-10-20 06:34:40,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:40,583 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2020-10-20 06:34:40,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 52 transitions. [2020-10-20 06:34:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-20 06:34:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 06:34:40,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2020-10-20 06:34:40,586 INFO L714 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-10-20 06:34:40,586 INFO L594 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-10-20 06:34:40,586 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:34:40,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 50 transitions. [2020-10-20 06:34:40,587 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:34:40,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:40,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:40,588 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-10-20 06:34:40,588 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:40,588 INFO L794 eck$LassoCheckResult]: Stem: 491#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 492#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 518#L19 assume main_~x~0 > 0; 498#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 521#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 502#L19 [2020-10-20 06:34:40,588 INFO L796 eck$LassoCheckResult]: Loop: 502#L19 assume main_~x~0 > 0; 504#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 501#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 502#L19 [2020-10-20 06:34:40,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:40,589 INFO L82 PathProgramCache]: Analyzing trace with hash 29863581, now seen corresponding path program 4 times [2020-10-20 06:34:40,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:40,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847842635] [2020-10-20 06:34:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,594 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,600 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:40,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:40,601 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 2 times [2020-10-20 06:34:40,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:40,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851312468] [2020-10-20 06:34:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,606 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,609 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:40,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:40,609 INFO L82 PathProgramCache]: Analyzing trace with hash 607724360, now seen corresponding path program 1 times [2020-10-20 06:34:40,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:40,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325658938] [2020-10-20 06:34:40,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,619 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,621 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:40,641 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:40,641 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:40,641 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:40,641 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:40,641 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:40,642 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,642 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:40,642 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:40,642 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2020-10-20 06:34:40,642 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:40,642 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:40,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,714 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:40,715 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:40,718 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:40,722 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:40,723 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:40,746 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:40,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,769 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:40,825 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:40,826 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:40,826 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:40,826 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:40,826 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:40,827 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:40,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,827 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:40,827 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:40,827 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2020-10-20 06:34:40,827 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:40,827 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:40,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:40,912 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:40,912 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,916 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:40,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:40,918 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:40,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:40,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:40,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:40,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:40,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:40,924 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:40,946 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,947 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:40,947 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:40,947 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:40,947 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:40,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:40,948 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:40,948 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:40,950 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:40,952 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:34:40,952 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:40,954 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:40,954 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:40,954 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:40,954 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-10-20 06:34:40,974 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:40,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:40,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:41,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:41,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:41,011 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 [2020-10-20 06:34:41,012 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2020-10-20 06:34:41,037 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 57 states and 89 transitions. Complement of second has 7 states. [2020-10-20 06:34:41,038 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 [2020-10-20 06:34:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:34:41,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-20 06:34:41,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:41,039 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:41,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:41,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:41,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:41,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:41,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:41,119 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 [2020-10-20 06:34:41,119 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2020-10-20 06:34:41,143 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 57 states and 89 transitions. Complement of second has 7 states. [2020-10-20 06:34:41,146 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 [2020-10-20 06:34:41,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:34:41,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-20 06:34:41,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:41,147 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:41,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:41,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:41,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:41,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:41,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:41,182 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 [2020-10-20 06:34:41,182 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2020-10-20 06:34:41,203 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 59 states and 92 transitions. Complement of second has 8 states. [2020-10-20 06:34:41,204 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 [2020-10-20 06:34:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-10-20 06:34:41,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-20 06:34:41,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:41,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2020-10-20 06:34:41,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:41,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2020-10-20 06:34:41,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:41,206 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 92 transitions. [2020-10-20 06:34:41,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:41,208 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 17 states and 21 transitions. [2020-10-20 06:34:41,208 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 06:34:41,208 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-20 06:34:41,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2020-10-20 06:34:41,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:41,208 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-10-20 06:34:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2020-10-20 06:34:41,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-10-20 06:34:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 06:34:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-10-20 06:34:41,210 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-20 06:34:41,210 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-20 06:34:41,210 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 06:34:41,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-10-20 06:34:41,211 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:41,211 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:41,211 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:41,211 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2020-10-20 06:34:41,211 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:41,212 INFO L794 eck$LassoCheckResult]: Stem: 812#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 813#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 818#L19 assume !(main_~x~0 > 0); 819#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 825#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 823#L19 assume !(main_~x~0 > 0); 814#L27 [2020-10-20 06:34:41,212 INFO L796 eck$LassoCheckResult]: Loop: 814#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 815#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 824#L19 assume !(main_~x~0 > 0); 814#L27 [2020-10-20 06:34:41,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:41,212 INFO L82 PathProgramCache]: Analyzing trace with hash 926018970, now seen corresponding path program 1 times [2020-10-20 06:34:41,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:41,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107459768] [2020-10-20 06:34:41,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:41,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:41,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:41,223 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:41,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:41,223 INFO L82 PathProgramCache]: Analyzing trace with hash 53186, now seen corresponding path program 3 times [2020-10-20 06:34:41,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:41,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279962557] [2020-10-20 06:34:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:41,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:41,229 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:41,229 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:41,230 INFO L82 PathProgramCache]: Analyzing trace with hash 456216457, now seen corresponding path program 1 times [2020-10-20 06:34:41,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:41,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709766626] [2020-10-20 06:34:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:41,235 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:41,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:41,241 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:41,258 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:41,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:41,258 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:41,258 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:41,258 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:41,258 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:41,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:41,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2020-10-20 06:34:41,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:41,259 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:41,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,351 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:41,351 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:41,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:41,354 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,358 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:41,358 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=7} Honda state: {ULTIMATE.start_main_#t~nondet4=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:41,379 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:41,382 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:41,382 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,406 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:41,406 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:41,409 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:41,409 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:41,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:41,432 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,435 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:41,435 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:41,459 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:41,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:41,483 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,541 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:41,542 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:41,542 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:41,542 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:41,542 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:41,543 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:41,543 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,543 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:41,543 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:41,543 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2020-10-20 06:34:41,543 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:41,543 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:41,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,619 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:41,619 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,623 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:41,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:41,624 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:41,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:41,624 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:34:41,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:41,625 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 06:34:41,625 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:41,627 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,651 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:41,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:41,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:41,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:41,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:41,656 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:41,656 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:41,665 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,704 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:41,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:41,705 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:41,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:41,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:41,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:41,706 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:41,706 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:41,708 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,738 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:41,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:41,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:41,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:41,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:41,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:41,741 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:41,741 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:41,743 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:41,745 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:41,745 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,750 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:41,751 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:41,751 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:41,751 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-20 06:34:41,771 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:41,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:41,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:41,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:41,803 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:41,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:41,814 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 [2020-10-20 06:34:41,814 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-10-20 06:34:41,834 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 26 transitions. Complement of second has 5 states. [2020-10-20 06:34:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:41,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:34:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-20 06:34:41,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-20 06:34:41,837 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:41,837 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:41,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:41,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:41,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:41,864 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:41,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:41,876 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 [2020-10-20 06:34:41,876 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-10-20 06:34:41,891 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 26 transitions. Complement of second has 5 states. [2020-10-20 06:34:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:41,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:34:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-20 06:34:41,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-20 06:34:41,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:41,892 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:41,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:41,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:41,920 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:41,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:41,938 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 [2020-10-20 06:34:41,939 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-10-20 06:34:41,962 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 27 states and 32 transitions. Complement of second has 4 states. [2020-10-20 06:34:41,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:34:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:34:41,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-20 06:34:41,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:41,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2020-10-20 06:34:41,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:41,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 6 letters. [2020-10-20 06:34:41,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:41,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2020-10-20 06:34:41,966 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:41,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2020-10-20 06:34:41,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:34:41,967 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:34:41,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:34:41,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:34:41,968 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:41,968 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:41,974 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:41,974 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-20 06:34:41,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:34:41,975 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:41,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:34:41,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:34:41 BoogieIcfgContainer [2020-10-20 06:34:41,982 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:34:41,982 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:34:41,983 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:34:41,983 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:34:41,983 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:36" (3/4) ... [2020-10-20 06:34:41,987 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:34:41,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:34:41,990 INFO L168 Benchmark]: Toolchain (without parser) took 5834.61 ms. Allocated memory was 40.4 MB in the beginning and 59.2 MB in the end (delta: 18.9 MB). Free memory was 18.3 MB in the beginning and 40.7 MB in the end (delta: -22.4 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:34:41,990 INFO L168 Benchmark]: CDTParser took 1.18 ms. Allocated memory is still 30.9 MB. Free memory was 17.0 MB in the beginning and 17.0 MB in the end (delta: 31.4 kB). Peak memory consumption was 31.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:34:41,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.60 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.4 MB in the beginning and 18.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:41,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.39 ms. Allocated memory is still 41.4 MB. Free memory was 18.9 MB in the beginning and 17.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:41,993 INFO L168 Benchmark]: Boogie Preprocessor took 17.18 ms. Allocated memory is still 41.4 MB. Free memory was 17.4 MB in the beginning and 16.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:41,994 INFO L168 Benchmark]: RCFGBuilder took 216.58 ms. Allocated memory was 41.4 MB in the beginning and 42.5 MB in the end (delta: 1.0 MB). Free memory was 16.2 MB in the beginning and 21.1 MB in the end (delta: -4.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:41,995 INFO L168 Benchmark]: BuchiAutomizer took 5279.32 ms. Allocated memory was 42.5 MB in the beginning and 59.2 MB in the end (delta: 16.8 MB). Free memory was 21.1 MB in the beginning and 41.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:41,995 INFO L168 Benchmark]: Witness Printer took 5.00 ms. Allocated memory is still 59.2 MB. Free memory is still 40.7 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:34:41,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18 ms. Allocated memory is still 30.9 MB. Free memory was 17.0 MB in the beginning and 17.0 MB in the end (delta: 31.4 kB). Peak memory consumption was 31.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 273.60 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.4 MB in the beginning and 18.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 31.39 ms. Allocated memory is still 41.4 MB. Free memory was 18.9 MB in the beginning and 17.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 17.18 ms. Allocated memory is still 41.4 MB. Free memory was 17.4 MB in the beginning and 16.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 216.58 ms. Allocated memory was 41.4 MB in the beginning and 42.5 MB in the end (delta: 1.0 MB). Free memory was 16.2 MB in the beginning and 21.1 MB in the end (delta: -4.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 5279.32 ms. Allocated memory was 42.5 MB in the beginning and 59.2 MB in the end (delta: 16.8 MB). Free memory was 21.1 MB in the beginning and 41.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.3 GB. * Witness Printer took 5.00 ms. Allocated memory is still 59.2 MB. Free memory is still 40.7 MB. There was no memory consumed. Max. memory is 14.3 GB. * 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 -1 * x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function -1 * x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.2s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 4.1s. 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, 18 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 33 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 76 SDtfs, 73 SDslu, 32 SDs, 0 SdLazy, 117 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax162 hnf98 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 56ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...