./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer --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 0.2.0-a4ecdab [2020-11-29 18:38:54,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:38:54,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:38:54,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:38:54,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:38:54,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:38:54,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:38:54,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:38:54,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:38:54,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:38:54,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:38:54,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:38:54,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:38:54,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:38:54,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:38:54,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:38:54,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:38:54,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:38:54,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:38:54,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:38:54,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:38:54,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:38:54,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:38:54,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:38:54,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:38:54,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:38:54,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:38:54,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:38:54,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:38:54,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:38:54,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:38:54,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:38:54,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:38:54,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:38:54,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:38:54,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:38:54,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:38:54,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:38:54,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:38:54,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:38:54,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:38:54,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 18:38:54,325 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:38:54,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:38:54,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:38:54,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:38:54,330 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:38:54,330 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:38:54,330 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:38:54,330 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:38:54,330 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:38:54,346 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:38:54,347 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:38:54,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:38:54,348 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:38:54,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:38:54,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:38:54,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:38:54,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:38:54,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:38:54,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:38:54,349 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:38:54,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:38:54,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:38:54,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:38:54,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:38:54,350 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:38:54,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:38:54,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:38:54,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:38:54,351 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:38:54,354 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:38:54,355 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 [2020-11-29 18:38:54,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:38:54,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:38:54,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:38:54,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:38:54,687 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:38:54,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2020-11-29 18:38:54,762 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/data/39b6acec9/97ab34e8b4ee4ac0ac7516cca9734c01/FLAGaace5c34c [2020-11-29 18:38:55,209 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:38:55,209 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2020-11-29 18:38:55,216 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/data/39b6acec9/97ab34e8b4ee4ac0ac7516cca9734c01/FLAGaace5c34c [2020-11-29 18:38:55,589 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/data/39b6acec9/97ab34e8b4ee4ac0ac7516cca9734c01 [2020-11-29 18:38:55,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:38:55,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:38:55,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:38:55,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:38:55,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:38:55,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:38:55" (1/1) ... [2020-11-29 18:38:55,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5897c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55, skipping insertion in model container [2020-11-29 18:38:55,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:38:55" (1/1) ... [2020-11-29 18:38:55,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:38:55,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:38:55,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:38:55,800 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:38:55,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:38:55,829 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:38:55,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55 WrapperNode [2020-11-29 18:38:55,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:38:55,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:38:55,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:38:55,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:38:55,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55" (1/1) ... [2020-11-29 18:38:55,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55" (1/1) ... [2020-11-29 18:38:55,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:38:55,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:38:55,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:38:55,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:38:55,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55" (1/1) ... [2020-11-29 18:38:55,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55" (1/1) ... [2020-11-29 18:38:55,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55" (1/1) ... [2020-11-29 18:38:55,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55" (1/1) ... [2020-11-29 18:38:55,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55" (1/1) ... [2020-11-29 18:38:55,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55" (1/1) ... [2020-11-29 18:38:55,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55" (1/1) ... [2020-11-29 18:38:55,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:38:55,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:38:55,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:38:55,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:38:55,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:38:55,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:38:56,122 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:38:56,122 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 18:38:56,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:38:56 BoogieIcfgContainer [2020-11-29 18:38:56,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:38:56,125 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:38:56,125 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:38:56,128 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:38:56,129 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:38:56,129 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:38:55" (1/3) ... [2020-11-29 18:38:56,134 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2da75079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:38:56, skipping insertion in model container [2020-11-29 18:38:56,134 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:38:56,135 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:55" (2/3) ... [2020-11-29 18:38:56,135 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2da75079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:38:56, skipping insertion in model container [2020-11-29 18:38:56,135 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:38:56,135 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:38:56" (3/3) ... [2020-11-29 18:38:56,137 INFO L373 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3.c [2020-11-29 18:38:56,183 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:38:56,183 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:38:56,183 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:38:56,184 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:38:56,184 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:38:56,184 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:38:56,184 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:38:56,184 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:38:56,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-29 18:38:56,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 18:38:56,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:38:56,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:38:56,251 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 18:38:56,251 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:38:56,251 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:38:56,251 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-29 18:38:56,252 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 18:38:56,252 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:38:56,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:38:56,253 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 18:38:56,253 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:38:56,260 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 [2020-11-29 18:38:56,261 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 [2020-11-29 18:38:56,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:56,266 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 18:38:56,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:56,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749897297] [2020-11-29 18:38:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:56,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:56,445 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:56,468 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:38:56,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:56,474 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 1 times [2020-11-29 18:38:56,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:56,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949553287] [2020-11-29 18:38:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:56,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:56,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:56,510 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:38:56,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:56,512 INFO L82 PathProgramCache]: Analyzing trace with hash 963597, now seen corresponding path program 1 times [2020-11-29 18:38:56,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:56,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378220554] [2020-11-29 18:38:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:56,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:56,527 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:56,529 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:38:56,594 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:38:56,595 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:38:56,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:38:56,595 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:38:56,596 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:38:56,596 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:56,596 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:38:56,596 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:38:56,596 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2020-11-29 18:38:56,597 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:38:56,597 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:38:56,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:56,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:56,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:56,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:56,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:56,791 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:38:56,792 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:56,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:56,803 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:38:56,812 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:56,813 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:56,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:56,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:38:56,855 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:56,856 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:56,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:56,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:38:56,881 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:56,881 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:56,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:56,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:38:56,933 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:56,933 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:56,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:56,965 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:56,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:38:56,998 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:38:57,032 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:38:57,034 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:38:57,034 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:38:57,035 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:38:57,035 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:38:57,035 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:38:57,035 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:57,035 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:38:57,035 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:38:57,035 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2020-11-29 18:38:57,035 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:38:57,035 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:38:57,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:57,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:57,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:57,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:57,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:57,187 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:38:57,191 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:57,200 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 [2020-11-29 18:38:57,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:57,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:57,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:38:57,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:57,213 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:38:57,213 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 [2020-11-29 18:38:57,225 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:57,268 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 [2020-11-29 18:38:57,270 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:57,270 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:38:57,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:57,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:38:57,271 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:57,273 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:38:57,273 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:57,282 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:57,325 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 [2020-11-29 18:38:57,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:57,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:57,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:38:57,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:57,331 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:38:57,331 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:38:57,336 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:57,382 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 [2020-11-29 18:38:57,384 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:57,384 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:38:57,384 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:57,384 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 18:38:57,384 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:57,386 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 18:38:57,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:57,389 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:57,426 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:57,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:57,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:38:57,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:57,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:38:57,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:57,429 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:38:57,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:38:57,434 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:38:57,464 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 18:38:57,465 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:57,498 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:38:57,498 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:38:57,498 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:38:57,499 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 [2020-11-29 18:38:57,535 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:38:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:57,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:38:57,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:38:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:57,597 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:38:57,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:38:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:38:57,628 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 [2020-11-29 18:38:57,630 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2020-11-29 18:38:57,694 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. [2020-11-29 18:38:57,697 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 [2020-11-29 18:38:57,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:38:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2020-11-29 18:38:57,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-29 18:38:57,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:38:57,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 18:38:57,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:38:57,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-29 18:38:57,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:38:57,705 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2020-11-29 18:38:57,714 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 18:38:57,721 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 16 states and 25 transitions. [2020-11-29 18:38:57,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 18:38:57,722 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-29 18:38:57,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 25 transitions. [2020-11-29 18:38:57,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:38:57,723 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 25 transitions. [2020-11-29 18:38:57,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 25 transitions. [2020-11-29 18:38:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-11-29 18:38:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 18:38:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2020-11-29 18:38:57,750 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-11-29 18:38:57,750 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-11-29 18:38:57,750 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 18:38:57,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2020-11-29 18:38:57,752 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 18:38:57,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:38:57,755 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:38:57,756 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 18:38:57,756 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:38:57,756 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 [2020-11-29 18:38:57,757 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 [2020-11-29 18:38:57,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:57,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 18:38:57,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:57,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704555526] [2020-11-29 18:38:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:57,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:57,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:57,773 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:38:57,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:57,774 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 1 times [2020-11-29 18:38:57,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:57,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991730297] [2020-11-29 18:38:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:57,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:57,782 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:57,784 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:38:57,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:57,784 INFO L82 PathProgramCache]: Analyzing trace with hash 29863643, now seen corresponding path program 1 times [2020-11-29 18:38:57,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:57,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779331159] [2020-11-29 18:38:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:57,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:57,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:57,797 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:38:57,838 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:38:57,839 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:38:57,839 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:38:57,839 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:38:57,839 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:38:57,839 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:57,839 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:38:57,839 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:38:57,839 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2020-11-29 18:38:57,840 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:38:57,840 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:38:57,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:57,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:57,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:57,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:57,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:57,941 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:38:57,942 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:57,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:57,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:38:57,959 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:57,959 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:58,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:58,002 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 [2020-11-29 18:38:58,005 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:58,005 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:58,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:58,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:38:58,034 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:58,034 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:58,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:58,078 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:58,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:38:58,182 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 [2020-11-29 18:38:58,264 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:38:58,267 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:38:58,267 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:38:58,267 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:38:58,267 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:38:58,267 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:38:58,267 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:58,267 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:38:58,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:38:58,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2020-11-29 18:38:58,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:38:58,268 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:38:58,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:58,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:58,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:58,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:58,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:58,384 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:38:58,384 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:58,392 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:58,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:58,395 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:58,395 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:38:58,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:58,398 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:38:58,398 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:38:58,402 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:58,454 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 [2020-11-29 18:38:58,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:58,456 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:58,456 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:38:58,456 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:58,459 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:38:58,459 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:58,464 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:58,505 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 [2020-11-29 18:38:58,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:58,507 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:38:58,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:58,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:38:58,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:58,508 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:38:58,508 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 [2020-11-29 18:38:58,518 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:58,555 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 [2020-11-29 18:38:58,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:58,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:38:58,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:58,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:38:58,558 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:58,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:38:58,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:58,562 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:38:58,566 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 18:38:58,566 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:58,569 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:38:58,569 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:38:58,569 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:38:58,569 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 [2020-11-29 18:38:58,604 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:38:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:58,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:38:58,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:38:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:58,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:38:58,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:38:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:38:58,690 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 [2020-11-29 18:38:58,690 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-11-29 18:38:58,720 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. [2020-11-29 18:38:58,721 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 [2020-11-29 18:38:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:38:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-29 18:38:58,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 3 letters. [2020-11-29 18:38:58,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:38:58,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 18:38:58,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:38:58,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 6 letters. [2020-11-29 18:38:58,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:38:58,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 70 transitions. [2020-11-29 18:38:58,725 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 18:38:58,727 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 56 transitions. [2020-11-29 18:38:58,727 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-29 18:38:58,727 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 18:38:58,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 56 transitions. [2020-11-29 18:38:58,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:38:58,728 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-29 18:38:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 56 transitions. [2020-11-29 18:38:58,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-11-29 18:38:58,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 18:38:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 52 transitions. [2020-11-29 18:38:58,732 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2020-11-29 18:38:58,732 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2020-11-29 18:38:58,732 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 18:38:58,732 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 52 transitions. [2020-11-29 18:38:58,733 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 18:38:58,733 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:38:58,733 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:38:58,734 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 18:38:58,734 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:38:58,734 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 [2020-11-29 18:38:58,734 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 [2020-11-29 18:38:58,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:58,735 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2020-11-29 18:38:58,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:58,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630417743] [2020-11-29 18:38:58,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:58,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:58,745 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:58,747 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:38:58,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:58,747 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 2 times [2020-11-29 18:38:58,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:58,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021414144] [2020-11-29 18:38:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:58,753 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:58,756 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:58,757 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:38:58,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:58,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869056, now seen corresponding path program 1 times [2020-11-29 18:38:58,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:58,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275588061] [2020-11-29 18:38:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:38:58,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275588061] [2020-11-29 18:38:58,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:38:58,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:38:58,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919709926] [2020-11-29 18:38:58,864 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:38:58,864 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:38:58,864 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:38:58,865 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:38:58,865 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:38:58,865 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:58,865 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:38:58,865 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:38:58,865 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2020-11-29 18:38:58,865 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:38:58,865 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:38:58,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:58,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:58,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:58,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:58,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:58,963 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:38:58,963 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:58,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:58,966 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:38:58,969 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:58,969 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:59,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:59,006 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 [2020-11-29 18:38:59,014 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:59,014 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:59,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:59,052 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 [2020-11-29 18:38:59,056 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:59,056 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:59,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:59,080 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:59,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:38:59,110 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:38:59,138 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:38:59,139 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:38:59,139 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:38:59,139 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:38:59,139 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:38:59,139 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:38:59,139 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:59,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:38:59,140 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:38:59,140 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2020-11-29 18:38:59,140 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:38:59,140 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:38:59,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:59,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:59,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:59,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:59,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:59,309 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:38:59,309 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:59,319 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 [2020-11-29 18:38:59,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:59,321 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:38:59,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:59,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:38:59,321 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:59,322 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:38:59,322 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:38:59,323 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:38:59,345 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 [2020-11-29 18:38:59,346 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:59,346 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:38:59,346 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:59,347 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 18:38:59,347 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:59,348 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 18:38:59,348 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:38:59,355 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:59,407 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 [2020-11-29 18:38:59,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:59,409 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:59,409 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:38:59,409 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:59,412 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:38:59,413 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:59,419 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:59,456 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 [2020-11-29 18:38:59,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:38:59,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:38:59,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:38:59,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:38:59,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:38:59,459 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:38:59,460 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:59,462 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:38:59,466 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 18:38:59,466 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:59,469 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:38:59,469 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:38:59,470 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:38:59,470 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:59,505 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:38:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:59,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:38:59,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:38:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:59,539 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:38:59,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:38:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:38:59,557 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 [2020-11-29 18:38:59,557 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26 Second operand 4 states. [2020-11-29 18:38:59,589 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. [2020-11-29 18:38:59,592 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 [2020-11-29 18:38:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:38:59,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-29 18:38:59,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 18:38:59,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:38:59,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 18:38:59,593 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:38:59,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-29 18:38:59,593 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:38:59,593 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 69 transitions. [2020-11-29 18:38:59,595 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-29 18:38:59,596 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 69 transitions. [2020-11-29 18:38:59,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-11-29 18:38:59,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2020-11-29 18:38:59,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 69 transitions. [2020-11-29 18:38:59,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:38:59,597 INFO L691 BuchiCegarLoop]: Abstraction has 43 states and 69 transitions. [2020-11-29 18:38:59,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 69 transitions. [2020-11-29 18:38:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-11-29 18:38:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 18:38:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 67 transitions. [2020-11-29 18:38:59,602 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 67 transitions. [2020-11-29 18:38:59,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:38:59,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:38:59,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:38:59,607 INFO L87 Difference]: Start difference. First operand 42 states and 67 transitions. Second operand 4 states. [2020-11-29 18:38:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:38:59,658 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2020-11-29 18:38:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:38:59,659 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2020-11-29 18:38:59,660 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-29 18:38:59,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 53 transitions. [2020-11-29 18:38:59,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-29 18:38:59,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 18:38:59,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 53 transitions. [2020-11-29 18:38:59,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:38:59,662 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2020-11-29 18:38:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 53 transitions. [2020-11-29 18:38:59,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-11-29 18:38:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 18:38:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2020-11-29 18:38:59,665 INFO L714 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2020-11-29 18:38:59,665 INFO L594 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2020-11-29 18:38:59,665 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 18:38:59,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 43 transitions. [2020-11-29 18:38:59,666 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 18:38:59,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:38:59,666 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:38:59,667 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 18:38:59,667 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:38:59,667 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 [2020-11-29 18:38:59,667 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 [2020-11-29 18:38:59,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:59,668 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 2 times [2020-11-29 18:38:59,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:59,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674821445] [2020-11-29 18:38:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:59,673 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:59,677 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:59,678 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:38:59,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:59,679 INFO L82 PathProgramCache]: Analyzing trace with hash 39820, now seen corresponding path program 1 times [2020-11-29 18:38:59,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:59,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456925897] [2020-11-29 18:38:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:59,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:59,686 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:59,687 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:38:59,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:59,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869312, now seen corresponding path program 3 times [2020-11-29 18:38:59,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:59,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117714452] [2020-11-29 18:38:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:59,694 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:38:59,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:38:59,701 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:38:59,747 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:38:59,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:38:59,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:38:59,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:38:59,748 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:38:59,748 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:38:59,748 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:38:59,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:38:59,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2020-11-29 18:38:59,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:38:59,748 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:38:59,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:59,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:59,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:59,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:59,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:38:59,854 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:38:59,854 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:59,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:59,861 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 [2020-11-29 18:38:59,864 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:59,865 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:59,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:59,902 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 [2020-11-29 18:38:59,907 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:38:59,907 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:59,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:38:59,945 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:38:59,985 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:38:59,985 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:00,023 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:39:00,025 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:39:00,025 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:39:00,025 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:39:00,025 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:39:00,025 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:39:00,026 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:00,026 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:39:00,026 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:39:00,026 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2020-11-29 18:39:00,026 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:39:00,026 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:39:00,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,135 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:39:00,135 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:39:00,159 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 [2020-11-29 18:39:00,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:39:00,165 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:39:00,165 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:39:00,165 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:39:00,165 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:39:00,167 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:39:00,167 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:00,169 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:39:00,219 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 [2020-11-29 18:39:00,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:39:00,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:39:00,220 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:39:00,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:39:00,224 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:39:00,224 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:39:00,228 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:39:00,274 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 [2020-11-29 18:39:00,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:39:00,276 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:39:00,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:39:00,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:39:00,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:39:00,278 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:39:00,278 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 [2020-11-29 18:39:00,281 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:39:00,284 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 18:39:00,285 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:39:00,287 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:39:00,287 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:39:00,288 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:39:00,288 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:00,322 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:39:00,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:00,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:39:00,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:00,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:39:00,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:39:00,368 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 [2020-11-29 18:39:00,368 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21 Second operand 4 states. [2020-11-29 18:39:00,393 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. [2020-11-29 18:39:00,393 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 [2020-11-29 18:39:00,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:39:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-29 18:39:00,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 18:39:00,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:00,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 18:39:00,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:00,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-29 18:39:00,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:00,395 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 52 transitions. [2020-11-29 18:39:00,396 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 18:39:00,397 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 52 transitions. [2020-11-29 18:39:00,397 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 18:39:00,401 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 18:39:00,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 52 transitions. [2020-11-29 18:39:00,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:39:00,402 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2020-11-29 18:39:00,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 52 transitions. [2020-11-29 18:39:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-11-29 18:39:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 18:39:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2020-11-29 18:39:00,406 INFO L714 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-11-29 18:39:00,406 INFO L594 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-11-29 18:39:00,406 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 18:39:00,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 50 transitions. [2020-11-29 18:39:00,409 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 18:39:00,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:39:00,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:39:00,410 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-11-29 18:39:00,410 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:39:00,411 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 [2020-11-29 18:39:00,411 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 [2020-11-29 18:39:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:00,411 INFO L82 PathProgramCache]: Analyzing trace with hash 29863581, now seen corresponding path program 4 times [2020-11-29 18:39:00,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:00,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979068385] [2020-11-29 18:39:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:00,418 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:00,425 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:00,427 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:39:00,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:00,428 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 2 times [2020-11-29 18:39:00,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:00,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514655604] [2020-11-29 18:39:00,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:00,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:00,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:00,436 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:39:00,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:00,437 INFO L82 PathProgramCache]: Analyzing trace with hash 607724360, now seen corresponding path program 1 times [2020-11-29 18:39:00,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:00,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486614643] [2020-11-29 18:39:00,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:00,445 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:00,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:00,458 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:39:00,483 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:39:00,483 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:39:00,483 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:39:00,483 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:39:00,483 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:39:00,483 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:00,483 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:39:00,483 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:39:00,483 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2020-11-29 18:39:00,484 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:39:00,484 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:39:00,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,556 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:39:00,556 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:39:00,559 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:39:00,559 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:39:00,561 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:39:00,562 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:39:00,590 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:39:00,590 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:00,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:39:00,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:39:00,706 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:39:00,708 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:39:00,708 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:39:00,708 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:39:00,708 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:39:00,708 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:39:00,708 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:00,708 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:39:00,708 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:39:00,708 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2020-11-29 18:39:00,708 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:39:00,708 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:39:00,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:00,795 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:39:00,795 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:39:00,799 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 [2020-11-29 18:39:00,800 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:39:00,800 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:39:00,800 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:39:00,800 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:39:00,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:39:00,801 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:39:00,801 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:39:00,803 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:00,824 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 [2020-11-29 18:39:00,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:39:00,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:39:00,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:39:00,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:39:00,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:39:00,827 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:39:00,827 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:39:00,854 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:39:00,856 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 18:39:00,856 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:39:00,859 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:39:00,860 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:39:00,860 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:39:00,860 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:00,895 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:39:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:00,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:39:00,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:00,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:39:00,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:39:00,939 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 [2020-11-29 18:39:00,939 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2020-11-29 18:39:00,978 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. [2020-11-29 18:39:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 18:39:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:39:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-29 18:39:00,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 18:39:00,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:00,982 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 18:39:00,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:01,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:39:01,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:01,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:39:01,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:39:01,039 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 [2020-11-29 18:39:01,040 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2020-11-29 18:39:01,076 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. [2020-11-29 18:39:01,079 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 [2020-11-29 18:39:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:39:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-29 18:39:01,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 18:39:01,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:01,079 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 18:39:01,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:01,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:39:01,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:01,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:39:01,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:39:01,140 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 [2020-11-29 18:39:01,140 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2020-11-29 18:39:01,165 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. [2020-11-29 18:39:01,166 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 [2020-11-29 18:39:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:39:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-11-29 18:39:01,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 18:39:01,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:01,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-29 18:39:01,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:01,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2020-11-29 18:39:01,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:01,168 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 92 transitions. [2020-11-29 18:39:01,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 18:39:01,170 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 17 states and 21 transitions. [2020-11-29 18:39:01,170 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-29 18:39:01,170 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 18:39:01,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2020-11-29 18:39:01,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:39:01,170 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-11-29 18:39:01,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2020-11-29 18:39:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-11-29 18:39:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 18:39:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-11-29 18:39:01,172 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-29 18:39:01,172 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-29 18:39:01,172 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 18:39:01,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-11-29 18:39:01,172 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 18:39:01,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:39:01,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:39:01,173 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2020-11-29 18:39:01,173 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:39:01,173 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 [2020-11-29 18:39:01,173 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 [2020-11-29 18:39:01,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:01,174 INFO L82 PathProgramCache]: Analyzing trace with hash 926018970, now seen corresponding path program 1 times [2020-11-29 18:39:01,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:01,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057641317] [2020-11-29 18:39:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:01,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:01,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:01,191 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:39:01,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:01,192 INFO L82 PathProgramCache]: Analyzing trace with hash 53186, now seen corresponding path program 3 times [2020-11-29 18:39:01,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:01,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316725977] [2020-11-29 18:39:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:01,195 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:01,197 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:01,199 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:39:01,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:01,200 INFO L82 PathProgramCache]: Analyzing trace with hash 456216457, now seen corresponding path program 1 times [2020-11-29 18:39:01,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:01,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730488842] [2020-11-29 18:39:01,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:01,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:39:01,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:39:01,220 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:39:01,282 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:39:01,283 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:39:01,283 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:39:01,283 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:39:01,283 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:39:01,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:01,283 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:39:01,283 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:39:01,283 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2020-11-29 18:39:01,283 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:39:01,283 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:39:01,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:01,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:01,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:01,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:01,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:01,414 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:39:01,415 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:01,417 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:39:01,417 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:39:01,420 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:39:01,420 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:39:01,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:39:01,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:39:01,448 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:39:01,448 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:39:01,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:39:01,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:39:01,473 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:39:01,473 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:01,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:39:01,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:39:01,501 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:39:01,501 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 /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:39:01,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:39:01,523 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:01,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:39:01,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:39:01,602 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:39:01,604 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:39:01,604 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:39:01,604 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:39:01,604 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:39:01,604 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:39:01,604 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:01,604 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:39:01,604 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:39:01,604 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2020-11-29 18:39:01,604 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:39:01,604 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:39:01,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:01,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:01,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:01,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:01,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:39:01,714 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:39:01,714 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:39:01,717 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 [2020-11-29 18:39:01,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:39:01,719 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:39:01,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:39:01,719 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 18:39:01,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:39:01,720 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 18:39:01,720 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:39:01,722 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:39:01,744 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:39:01,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:39:01,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:39:01,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:39:01,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:39:01,757 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:39:01,757 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:39:01,769 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:39:01,793 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 [2020-11-29 18:39:01,794 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:39:01,794 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:39:01,794 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:39:01,794 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:39:01,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:39:01,795 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:39:01,795 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:39:01,796 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:39:01,817 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 [2020-11-29 18:39:01,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:39:01,819 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:39:01,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:39:01,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:39:01,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:39:01,820 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:39:01,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:39:01,821 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:39:01,824 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 18:39:01,824 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff3010e9-d7c9-42b1-bf68-9b6d158eccb0/bin/uautomizer/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 [2020-11-29 18:39:01,830 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:39:01,830 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:39:01,830 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:39:01,830 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-29 18:39:01,849 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:39:01,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:01,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:39:01,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:01,908 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:39:01,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:39:01,921 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 [2020-11-29 18:39:01,921 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-29 18:39:01,940 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. [2020-11-29 18:39:01,942 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 [2020-11-29 18:39:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 18:39:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-29 18:39:01,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-29 18:39:01,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:01,942 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 18:39:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:01,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:39:01,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:01,968 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:39:01,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:39:01,985 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 [2020-11-29 18:39:01,985 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-29 18:39:02,002 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. [2020-11-29 18:39:02,003 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 [2020-11-29 18:39:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 18:39:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-29 18:39:02,004 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-29 18:39:02,004 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:02,004 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 18:39:02,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:02,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:39:02,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:02,044 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:39:02,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:39:02,064 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 [2020-11-29 18:39:02,064 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-29 18:39:02,110 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. [2020-11-29 18:39:02,112 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 [2020-11-29 18:39:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 18:39:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-29 18:39:02,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-29 18:39:02,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:02,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-29 18:39:02,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:02,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 6 letters. [2020-11-29 18:39:02,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:39:02,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2020-11-29 18:39:02,115 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:39:02,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2020-11-29 18:39:02,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 18:39:02,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 18:39:02,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 18:39:02,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:39:02,116 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:39:02,116 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:39:02,116 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:39:02,116 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 18:39:02,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:39:02,116 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:39:02,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 18:39:02,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:39:02 BoogieIcfgContainer [2020-11-29 18:39:02,121 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 18:39:02,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:39:02,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:39:02,124 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:39:02,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:38:56" (3/4) ... [2020-11-29 18:39:02,127 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:39:02,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:39:02,129 INFO L168 Benchmark]: Toolchain (without parser) took 6528.55 ms. Allocated memory was 123.7 MB in the beginning and 157.3 MB in the end (delta: 33.6 MB). Free memory was 105.1 MB in the beginning and 69.0 MB in the end (delta: 36.1 MB). Peak memory consumption was 67.8 MB. Max. memory is 16.1 GB. [2020-11-29 18:39:02,129 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 83.9 MB. Free memory was 60.0 MB in the beginning and 60.0 MB in the end (delta: 52.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:39:02,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.49 ms. Allocated memory is still 123.7 MB. Free memory was 105.0 MB in the beginning and 96.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:39:02,133 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.04 ms. Allocated memory is still 123.7 MB. Free memory was 96.3 MB in the beginning and 95.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:39:02,137 INFO L168 Benchmark]: Boogie Preprocessor took 20.72 ms. Allocated memory is still 123.7 MB. Free memory was 95.1 MB in the beginning and 94.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:39:02,137 INFO L168 Benchmark]: RCFGBuilder took 237.19 ms. Allocated memory is still 123.7 MB. Free memory was 94.0 MB in the beginning and 85.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:39:02,138 INFO L168 Benchmark]: BuchiAutomizer took 5996.66 ms. Allocated memory was 123.7 MB in the beginning and 157.3 MB in the end (delta: 33.6 MB). Free memory was 85.2 MB in the beginning and 69.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 51.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:39:02,140 INFO L168 Benchmark]: Witness Printer took 4.02 ms. Allocated memory is still 157.3 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:39:02,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 83.9 MB. Free memory was 60.0 MB in the beginning and 60.0 MB in the end (delta: 52.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 197.49 ms. Allocated memory is still 123.7 MB. Free memory was 105.0 MB in the beginning and 96.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.04 ms. Allocated memory is still 123.7 MB. Free memory was 96.3 MB in the beginning and 95.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.72 ms. Allocated memory is still 123.7 MB. Free memory was 95.1 MB in the beginning and 94.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 237.19 ms. Allocated memory is still 123.7 MB. Free memory was 94.0 MB in the beginning and 85.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5996.66 ms. Allocated memory was 123.7 MB in the beginning and 157.3 MB in the end (delta: 33.6 MB). Free memory was 85.2 MB in the beginning and 69.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 51.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.02 ms. Allocated memory is still 157.3 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 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 5.9s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 4.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. 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: 32ms 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...