./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 0.1.24-cad4683 [2019-11-15 23:30:10,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:30:10,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:30:10,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:30:10,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:30:10,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:30:10,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:30:10,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:30:10,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:30:10,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:30:10,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:30:10,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:30:10,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:30:10,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:30:10,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:30:10,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:30:10,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:30:10,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:30:10,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:30:10,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:30:10,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:30:10,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:30:10,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:30:10,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:30:10,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:30:10,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:30:10,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:30:10,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:30:10,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:30:10,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:30:10,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:30:10,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:30:10,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:30:10,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:30:10,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:30:10,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:30:10,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:30:10,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:30:10,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:30:10,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:30:10,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:30:10,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 23:30:10,807 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:30:10,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:30:10,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:30:10,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:30:10,811 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:30:10,811 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:30:10,811 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:30:10,812 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:30:10,812 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:30:10,812 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:30:10,813 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:30:10,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:30:10,814 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:30:10,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:30:10,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:30:10,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:30:10,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:30:10,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:30:10,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:30:10,815 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:30:10,815 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:30:10,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:30:10,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:30:10,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:30:10,817 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:30:10,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:30:10,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:30:10,818 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:30:10,821 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:30:10,821 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:10,858 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:30:10,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:30:10,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:30:10,878 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:30:10,878 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:30:10,879 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2019-11-15 23:30:10,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/bin/uautomizer/data/205c388a0/a280593e19c54a34a4dcc2efe4fbe7a5/FLAGd76b77107 [2019-11-15 23:30:11,321 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:30:11,321 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2019-11-15 23:30:11,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/bin/uautomizer/data/205c388a0/a280593e19c54a34a4dcc2efe4fbe7a5/FLAGd76b77107 [2019-11-15 23:30:11,780 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/bin/uautomizer/data/205c388a0/a280593e19c54a34a4dcc2efe4fbe7a5 [2019-11-15 23:30:11,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:30:11,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:30:11,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:30:11,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:30:11,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:30:11,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:30:11" (1/1) ... [2019-11-15 23:30:11,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@458dbaf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:11, skipping insertion in model container [2019-11-15 23:30:11,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:30:11" (1/1) ... [2019-11-15 23:30:11,801 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:30:11,815 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:30:12,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:30:12,078 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:30:12,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:30:12,112 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:30:12,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12 WrapperNode [2019-11-15 23:30:12,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:30:12,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:30:12,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:30:12,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:30:12,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12" (1/1) ... [2019-11-15 23:30:12,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12" (1/1) ... [2019-11-15 23:30:12,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:30:12,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:30:12,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:30:12,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:30:12,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12" (1/1) ... [2019-11-15 23:30:12,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12" (1/1) ... [2019-11-15 23:30:12,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12" (1/1) ... [2019-11-15 23:30:12,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12" (1/1) ... [2019-11-15 23:30:12,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12" (1/1) ... [2019-11-15 23:30:12,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12" (1/1) ... [2019-11-15 23:30:12,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12" (1/1) ... [2019-11-15 23:30:12,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:30:12,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:30:12,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:30:12,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:30:12,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:30:12,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:30:12,369 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:30:12,369 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 23:30:12,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:30:12 BoogieIcfgContainer [2019-11-15 23:30:12,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:30:12,371 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:30:12,371 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:30:12,374 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:30:12,375 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:30:12,375 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:30:11" (1/3) ... [2019-11-15 23:30:12,376 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4143bd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:30:12, skipping insertion in model container [2019-11-15 23:30:12,376 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:30:12,376 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:30:12" (2/3) ... [2019-11-15 23:30:12,376 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4143bd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:30:12, skipping insertion in model container [2019-11-15 23:30:12,377 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:30:12,377 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:30:12" (3/3) ... [2019-11-15 23:30:12,378 INFO L371 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3.c [2019-11-15 23:30:12,424 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:30:12,424 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:30:12,424 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:30:12,424 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:30:12,425 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:30:12,425 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:30:12,425 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:30:12,425 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:30:12,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-15 23:30:12,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-15 23:30:12,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:30:12,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:30:12,466 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:30:12,466 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:30:12,467 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:30:12,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-15 23:30:12,468 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-15 23:30:12,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:30:12,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:30:12,469 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:30:12,469 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:30:12,476 INFO L791 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 10#L27-2true [2019-11-15 23:30:12,477 INFO L793 eck$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 [2019-11-15 23:30:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:12,483 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-15 23:30:12,491 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:12,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942801000] [2019-11-15 23:30:12,491 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:12,492 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:12,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:12,582 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:12,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:12,584 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 1 times [2019-11-15 23:30:12,584 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:12,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256651988] [2019-11-15 23:30:12,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:12,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:12,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:12,601 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:12,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:12,603 INFO L82 PathProgramCache]: Analyzing trace with hash 963597, now seen corresponding path program 1 times [2019-11-15 23:30:12,603 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:12,603 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282641008] [2019-11-15 23:30:12,603 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:12,603 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:12,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:12,620 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:12,683 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:12,684 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:12,684 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:12,684 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:12,684 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:30:12,684 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:12,685 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:12,685 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:12,685 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2019-11-15 23:30:12,685 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:12,685 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:12,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:12,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:12,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:12,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:12,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:12,890 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:12,891 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:12,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:12,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:12,905 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:12,906 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:12,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:12,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:12,917 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:12,917 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:12,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:12,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:12,931 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:12,931 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:12,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:12,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:12,943 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:12,943 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-5} Honda state: {ULTIMATE.start_main_#t~nondet4=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:12,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:12,948 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) [2019-11-15 23:30:12,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:30:12,958 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:12,974 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:30:12,977 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:12,977 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:12,977 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:12,977 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:12,977 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:30:12,978 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:12,978 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:12,978 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:12,978 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2019-11-15 23:30:12,978 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:12,978 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:12,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:12,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:12,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,117 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:13,121 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:30:13,123 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 [2019-11-15 23:30:13,124 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:13,124 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:13,124 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:13,125 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:13,133 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:30:13,133 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:30:13,156 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:13,157 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 [2019-11-15 23:30:13,165 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:13,165 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:13,166 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:13,166 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:13,166 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:13,167 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:13,167 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:13,168 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:13,169 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 [2019-11-15 23:30:13,170 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:13,170 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:13,170 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:13,170 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:13,172 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:30:13,172 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:30:13,188 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:13,188 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 [2019-11-15 23:30:13,190 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:13,191 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:13,191 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:13,191 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-15 23:30:13,192 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:13,194 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-15 23:30:13,194 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:13,209 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:13,216 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 [2019-11-15 23:30:13,217 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:13,217 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:13,218 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:13,218 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:13,218 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:13,219 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:13,219 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:13,226 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:30:13,230 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:30:13,230 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:30:13,232 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:30:13,232 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:30:13,233 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:30:13,233 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-15 23:30:13,236 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:30:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:13,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:30:13,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:13,290 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:30:13,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:30:13,325 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 [2019-11-15 23:30:13,326 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2019-11-15 23:30:13,391 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 33 states and 49 transitions. Complement of second has 8 states. [2019-11-15 23:30:13,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:30:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 23:30:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-11-15 23:30:13,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-15 23:30:13,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:13,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-15 23:30:13,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:13,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-15 23:30:13,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:13,398 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2019-11-15 23:30:13,401 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-15 23:30:13,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 16 states and 25 transitions. [2019-11-15 23:30:13,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-15 23:30:13,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-15 23:30:13,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 25 transitions. [2019-11-15 23:30:13,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:30:13,408 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 25 transitions. [2019-11-15 23:30:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 25 transitions. [2019-11-15 23:30:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-15 23:30:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-15 23:30:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2019-11-15 23:30:13,434 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-11-15 23:30:13,435 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-11-15 23:30:13,435 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:30:13,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2019-11-15 23:30:13,436 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-15 23:30:13,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:30:13,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:30:13,436 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 23:30:13,436 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:30:13,437 INFO L791 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 83#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 94#L19 [2019-11-15 23:30:13,437 INFO L793 eck$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 [2019-11-15 23:30:13,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:13,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-15 23:30:13,437 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:13,437 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63986760] [2019-11-15 23:30:13,438 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:13,438 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:13,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:13,445 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:13,446 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 1 times [2019-11-15 23:30:13,446 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:13,446 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607611808] [2019-11-15 23:30:13,446 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:13,446 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:13,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:13,459 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:13,459 INFO L82 PathProgramCache]: Analyzing trace with hash 29863643, now seen corresponding path program 1 times [2019-11-15 23:30:13,459 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:13,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477418933] [2019-11-15 23:30:13,460 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:13,460 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:13,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:13,483 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:13,517 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:13,517 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:13,517 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:13,517 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:13,518 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:30:13,518 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:13,518 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:13,518 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:13,518 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2019-11-15 23:30:13,518 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:13,518 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:13,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,604 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:13,604 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:13,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:13,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:13,626 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:13,626 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:13,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:13,643 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:13,648 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:13,648 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:13,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:13,659 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:13,663 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:13,663 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) [2019-11-15 23:30:13,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:13,680 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) [2019-11-15 23:30:13,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:30:13,703 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:13,762 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:30:13,764 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:13,764 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:13,764 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:13,764 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:13,764 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:30:13,764 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:13,765 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:13,765 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:13,765 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2019-11-15 23:30:13,765 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:13,765 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:13,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:13,846 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:13,846 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:30:13,847 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 [2019-11-15 23:30:13,848 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:13,848 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:13,848 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:13,848 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:13,850 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:30:13,850 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:30:13,854 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:13,855 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 [2019-11-15 23:30:13,856 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:13,856 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:13,856 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:13,856 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:13,858 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:30:13,858 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:30:13,863 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:13,864 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 [2019-11-15 23:30:13,865 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:13,865 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:13,865 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:13,865 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:13,866 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:13,866 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:13,866 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:13,868 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:13,868 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:30:13,869 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:13,869 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:13,870 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:13,870 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:13,870 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:13,870 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:13,871 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:13,875 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:30:13,880 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:30:13,880 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:30:13,881 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:30:13,881 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:30:13,881 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:30:13,881 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-15 23:30:13,882 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:30:13,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:13,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:30:13,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:13,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:30:13,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:30:13,953 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 [2019-11-15 23:30:13,954 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-11-15 23:30:13,988 INFO L76 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. [2019-11-15 23:30:13,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:30:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 23:30:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-15 23:30:13,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-15 23:30:13,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:13,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 23:30:13,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:13,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-15 23:30:13,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:13,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 70 transitions. [2019-11-15 23:30:13,995 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-15 23:30:13,997 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 56 transitions. [2019-11-15 23:30:13,997 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-15 23:30:13,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-15 23:30:14,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 56 transitions. [2019-11-15 23:30:14,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:30:14,002 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 56 transitions. [2019-11-15 23:30:14,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 56 transitions. [2019-11-15 23:30:14,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2019-11-15 23:30:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-15 23:30:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 52 transitions. [2019-11-15 23:30:14,016 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2019-11-15 23:30:14,016 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2019-11-15 23:30:14,016 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 23:30:14,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 52 transitions. [2019-11-15 23:30:14,017 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-15 23:30:14,017 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:30:14,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:30:14,018 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 23:30:14,018 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:30:14,018 INFO L791 eck$LassoCheckResult]: Stem: 178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 179#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 189#L19 assume main_~x~0 > 0; 185#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 192#L27-2 [2019-11-15 23:30:14,018 INFO L793 eck$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 [2019-11-15 23:30:14,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:14,019 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2019-11-15 23:30:14,019 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:14,019 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98793755] [2019-11-15 23:30:14,019 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:14,046 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:14,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:14,047 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 2 times [2019-11-15 23:30:14,048 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:14,048 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469001061] [2019-11-15 23:30:14,048 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,048 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:14,059 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:14,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:14,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869056, now seen corresponding path program 1 times [2019-11-15 23:30:14,060 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:14,060 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241042212] [2019-11-15 23:30:14,060 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,060 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:30:14,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241042212] [2019-11-15 23:30:14,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:30:14,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:30:14,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922836440] [2019-11-15 23:30:14,159 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:14,159 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:14,159 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:14,159 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:14,159 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:30:14,159 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:14,160 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:14,160 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:14,160 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2019-11-15 23:30:14,160 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:14,160 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:14,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,258 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:14,258 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) [2019-11-15 23:30:14,275 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:14,275 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:14,282 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:14,282 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) [2019-11-15 23:30:14,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:14,300 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:14,305 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:14,305 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-5} Honda state: {ULTIMATE.start_main_#t~nondet4=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) [2019-11-15 23:30:14,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:14,324 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 [2019-11-15 23:30:14,330 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:14,331 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) [2019-11-15 23:30:14,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:14,347 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) [2019-11-15 23:30:14,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:30:14,371 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 [2019-11-15 23:30:14,380 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:30:14,382 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:14,382 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:14,383 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:14,383 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:14,383 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:30:14,383 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:14,383 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:14,383 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:14,383 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2019-11-15 23:30:14,383 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:14,383 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:14,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,474 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:14,474 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:30:14,475 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 [2019-11-15 23:30:14,476 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:14,476 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:14,476 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:14,476 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:14,476 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:14,477 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:14,477 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:14,478 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:14,478 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 [2019-11-15 23:30:14,479 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:14,479 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:14,479 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:14,479 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-15 23:30:14,479 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:14,480 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-15 23:30:14,480 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:14,483 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:14,483 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 [2019-11-15 23:30:14,484 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:14,484 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:14,484 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:14,484 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:14,485 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:30:14,485 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:30:14,489 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:14,490 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 [2019-11-15 23:30:14,490 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:14,490 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:14,490 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:14,491 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:14,491 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:14,491 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:14,491 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:14,494 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:30:14,496 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:30:14,497 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:30:14,497 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:30:14,497 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:30:14,497 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:30:14,497 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-15 23:30:14,498 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:30:14,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:14,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:30:14,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:14,532 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:30:14,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:30:14,544 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 [2019-11-15 23:30:14,544 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26 Second operand 4 states. [2019-11-15 23:30:14,573 INFO L76 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. [2019-11-15 23:30:14,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:30:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 23:30:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-15 23:30:14,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-15 23:30:14,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:14,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-15 23:30:14,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:14,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-15 23:30:14,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:14,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 69 transitions. [2019-11-15 23:30:14,577 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-11-15 23:30:14,579 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 69 transitions. [2019-11-15 23:30:14,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2019-11-15 23:30:14,579 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2019-11-15 23:30:14,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 69 transitions. [2019-11-15 23:30:14,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:30:14,579 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 69 transitions. [2019-11-15 23:30:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 69 transitions. [2019-11-15 23:30:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-11-15 23:30:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-15 23:30:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 67 transitions. [2019-11-15 23:30:14,584 INFO L711 BuchiCegarLoop]: Abstraction has 42 states and 67 transitions. [2019-11-15 23:30:14,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:30:14,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:30:14,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:30:14,589 INFO L87 Difference]: Start difference. First operand 42 states and 67 transitions. Second operand 4 states. [2019-11-15 23:30:14,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:30:14,617 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2019-11-15 23:30:14,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:30:14,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2019-11-15 23:30:14,619 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-11-15 23:30:14,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 53 transitions. [2019-11-15 23:30:14,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-11-15 23:30:14,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-15 23:30:14,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 53 transitions. [2019-11-15 23:30:14,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:30:14,620 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2019-11-15 23:30:14,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 53 transitions. [2019-11-15 23:30:14,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-11-15 23:30:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:30:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2019-11-15 23:30:14,624 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2019-11-15 23:30:14,624 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2019-11-15 23:30:14,624 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 23:30:14,624 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 43 transitions. [2019-11-15 23:30:14,625 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-15 23:30:14,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:30:14,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:30:14,625 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 23:30:14,626 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:30:14,626 INFO L791 eck$LassoCheckResult]: Stem: 384#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 385#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 410#L19 assume main_~x~0 > 0; 395#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 393#L27-2 [2019-11-15 23:30:14,626 INFO L793 eck$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 [2019-11-15 23:30:14,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:14,630 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 2 times [2019-11-15 23:30:14,630 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:14,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176155432] [2019-11-15 23:30:14,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:14,647 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:14,649 INFO L82 PathProgramCache]: Analyzing trace with hash 39820, now seen corresponding path program 1 times [2019-11-15 23:30:14,650 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:14,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936892064] [2019-11-15 23:30:14,650 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:14,668 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:14,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:14,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869312, now seen corresponding path program 3 times [2019-11-15 23:30:14,669 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:14,670 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168748700] [2019-11-15 23:30:14,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:14,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:14,690 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:14,732 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:14,732 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:14,732 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:14,732 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:14,732 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:30:14,733 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:14,733 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:14,733 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:14,733 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2019-11-15 23:30:14,733 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:14,733 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:14,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,833 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:14,833 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:14,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:14,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:14,847 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:14,847 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:14,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:14,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:14,858 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:14,858 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Honda state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:14,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:14,871 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:14,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:30:14,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:14,888 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:30:14,891 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:14,891 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:14,891 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:14,891 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:14,892 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:30:14,892 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:14,892 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:14,892 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:14,892 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2019-11-15 23:30:14,892 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:14,892 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:14,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:14,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,033 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:15,034 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:30:15,034 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 [2019-11-15 23:30:15,035 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:15,035 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:15,035 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:15,035 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:15,035 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:15,035 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:15,036 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:15,037 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:15,038 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 [2019-11-15 23:30:15,038 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:15,038 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:15,038 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:15,038 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:15,039 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:30:15,039 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:30:15,042 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:15,042 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 [2019-11-15 23:30:15,043 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:15,043 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:15,043 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:15,043 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:15,043 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:15,043 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:15,043 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:15,046 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:30:15,047 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:30:15,047 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:30:15,048 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:30:15,048 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:30:15,048 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:30:15,048 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-15 23:30:15,049 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:30:15,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:15,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:30:15,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:15,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:30:15,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:30:15,094 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 [2019-11-15 23:30:15,094 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21 Second operand 4 states. [2019-11-15 23:30:15,109 INFO L76 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. [2019-11-15 23:30:15,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:30:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 23:30:15,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-15 23:30:15,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-15 23:30:15,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:15,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-15 23:30:15,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:15,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-15 23:30:15,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:15,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 52 transitions. [2019-11-15 23:30:15,113 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-15 23:30:15,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 52 transitions. [2019-11-15 23:30:15,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-15 23:30:15,114 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-11-15 23:30:15,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 52 transitions. [2019-11-15 23:30:15,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:30:15,114 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2019-11-15 23:30:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 52 transitions. [2019-11-15 23:30:15,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-11-15 23:30:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-15 23:30:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2019-11-15 23:30:15,117 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2019-11-15 23:30:15,117 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2019-11-15 23:30:15,117 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 23:30:15,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 50 transitions. [2019-11-15 23:30:15,118 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-15 23:30:15,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:30:15,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:30:15,119 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-15 23:30:15,119 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:30:15,119 INFO L791 eck$LassoCheckResult]: Stem: 491#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 492#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 518#L19 assume main_~x~0 > 0; 498#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 521#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 502#L19 [2019-11-15 23:30:15,119 INFO L793 eck$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 [2019-11-15 23:30:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:15,119 INFO L82 PathProgramCache]: Analyzing trace with hash 29863581, now seen corresponding path program 4 times [2019-11-15 23:30:15,120 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:15,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138564143] [2019-11-15 23:30:15,120 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,120 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,127 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:15,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:15,127 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 2 times [2019-11-15 23:30:15,128 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:15,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895047054] [2019-11-15 23:30:15,128 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,128 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,132 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:15,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:15,133 INFO L82 PathProgramCache]: Analyzing trace with hash 607724360, now seen corresponding path program 1 times [2019-11-15 23:30:15,133 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:15,133 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700883540] [2019-11-15 23:30:15,133 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,133 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,141 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:15,166 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:15,166 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:15,166 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:15,166 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:15,166 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:30:15,166 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:15,166 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:15,166 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:15,167 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2019-11-15 23:30:15,167 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:15,167 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:15,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,220 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:15,220 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) [2019-11-15 23:30:15,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:15,231 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:15,235 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:15,235 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:15,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:15,240 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:15,247 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:30:15,247 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:15,303 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:30:15,305 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:15,305 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:15,305 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:15,305 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:15,305 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:30:15,305 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:15,305 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:15,305 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:15,305 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2019-11-15 23:30:15,305 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:15,306 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:15,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,394 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:15,394 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:30:15,395 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 [2019-11-15 23:30:15,396 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:15,396 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:15,396 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:15,396 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:15,396 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:15,397 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:15,397 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:15,398 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:15,398 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 [2019-11-15 23:30:15,399 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:15,399 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:15,399 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:15,399 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:15,399 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:15,400 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:15,400 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:15,407 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:30:15,414 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:30:15,415 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:30:15,416 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:30:15,416 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:30:15,416 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:30:15,416 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-15 23:30:15,418 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:30:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:15,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:30:15,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:15,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:30:15,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:30:15,474 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 [2019-11-15 23:30:15,474 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-11-15 23:30:15,500 INFO L76 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. [2019-11-15 23:30:15,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:30:15,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 23:30:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-15 23:30:15,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 23:30:15,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:15,502 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:30:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:15,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:30:15,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:15,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:30:15,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:30:15,539 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 [2019-11-15 23:30:15,539 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-11-15 23:30:15,564 INFO L76 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. [2019-11-15 23:30:15,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:30:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 23:30:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-15 23:30:15,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 23:30:15,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:15,568 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:30:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:15,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:30:15,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:15,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:30:15,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:30:15,597 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 [2019-11-15 23:30:15,597 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-11-15 23:30:15,627 INFO L76 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. [2019-11-15 23:30:15,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:30:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 23:30:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-15 23:30:15,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 23:30:15,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:15,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-15 23:30:15,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:15,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-15 23:30:15,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:15,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 92 transitions. [2019-11-15 23:30:15,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:30:15,632 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 17 states and 21 transitions. [2019-11-15 23:30:15,632 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-15 23:30:15,632 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-15 23:30:15,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2019-11-15 23:30:15,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:30:15,633 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-15 23:30:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2019-11-15 23:30:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2019-11-15 23:30:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-15 23:30:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-11-15 23:30:15,634 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-15 23:30:15,634 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-15 23:30:15,634 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-15 23:30:15,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2019-11-15 23:30:15,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:30:15,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:30:15,635 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:30:15,636 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-11-15 23:30:15,636 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:30:15,636 INFO L791 eck$LassoCheckResult]: Stem: 812#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 813#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 818#L19 assume !(main_~x~0 > 0); 819#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 825#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 823#L19 assume !(main_~x~0 > 0); 814#L27 [2019-11-15 23:30:15,636 INFO L793 eck$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 [2019-11-15 23:30:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:15,636 INFO L82 PathProgramCache]: Analyzing trace with hash 926018970, now seen corresponding path program 1 times [2019-11-15 23:30:15,637 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:15,637 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719291203] [2019-11-15 23:30:15,637 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,637 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,657 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:15,660 INFO L82 PathProgramCache]: Analyzing trace with hash 53186, now seen corresponding path program 3 times [2019-11-15 23:30:15,660 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:15,660 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26586665] [2019-11-15 23:30:15,660 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,660 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,669 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:15,675 INFO L82 PathProgramCache]: Analyzing trace with hash 456216457, now seen corresponding path program 1 times [2019-11-15 23:30:15,675 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:30:15,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846181994] [2019-11-15 23:30:15,676 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,677 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:30:15,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:30:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:30:15,691 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:30:15,721 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:15,721 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:15,721 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:15,721 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:15,721 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:30:15,721 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:15,721 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:15,721 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:15,722 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2019-11-15 23:30:15,722 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:15,722 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:15,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,789 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:15,789 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:15,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:15,793 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:15,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:15,796 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-5} Honda state: {ULTIMATE.start_main_#t~nondet4=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:15,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:15,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:15,804 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:15,804 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:15,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:15,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:15,811 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:15,811 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:15,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:15,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:15,819 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:30:15,819 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_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:15,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:30:15,823 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77eb44f4-c9a3-4610-a611-5ad1b7965f97/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 [2019-11-15 23:30:15,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:30:15,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:30:15,870 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:30:15,871 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:30:15,871 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:30:15,871 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:30:15,871 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:30:15,871 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:30:15,871 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:30:15,871 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:30:15,872 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:30:15,872 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2019-11-15 23:30:15,872 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:30:15,872 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:30:15,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:30:15,931 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:30:15,931 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:30:15,931 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 [2019-11-15 23:30:15,932 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:15,932 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:15,932 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:15,932 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-15 23:30:15,932 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:15,933 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-15 23:30:15,933 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:15,935 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:15,935 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 [2019-11-15 23:30:15,936 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:15,936 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:15,936 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:15,936 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:15,937 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:30:15,937 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:30:15,939 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:15,940 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 [2019-11-15 23:30:15,940 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:15,940 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:15,940 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:15,940 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:15,940 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:15,941 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:15,941 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:15,941 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:30:15,942 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 [2019-11-15 23:30:15,942 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:30:15,942 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:30:15,942 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:30:15,943 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:30:15,943 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:30:15,943 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:30:15,943 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:30:15,945 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:30:15,948 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:30:15,948 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:30:15,948 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:30:15,948 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:30:15,949 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:30:15,949 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-15 23:30:15,949 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:30:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:15,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:30:15,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:15,985 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:30:15,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:30:15,992 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 [2019-11-15 23:30:15,993 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-15 23:30:16,010 INFO L76 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. [2019-11-15 23:30:16,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:30:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:30:16,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-15 23:30:16,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-15 23:30:16,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:16,013 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:30:16,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:16,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:30:16,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:16,037 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:30:16,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:30:16,045 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 [2019-11-15 23:30:16,045 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-15 23:30:16,071 INFO L76 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. [2019-11-15 23:30:16,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:30:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:30:16,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-15 23:30:16,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-15 23:30:16,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:16,072 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:30:16,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:30:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:16,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:30:16,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:30:16,092 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:30:16,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:30:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:30:16,100 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 [2019-11-15 23:30:16,100 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-15 23:30:16,115 INFO L76 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. [2019-11-15 23:30:16,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:30:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:30:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-15 23:30:16,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-15 23:30:16,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:16,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-15 23:30:16,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:16,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-15 23:30:16,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:30:16,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2019-11-15 23:30:16,118 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:30:16,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2019-11-15 23:30:16,119 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:30:16,119 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:30:16,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:30:16,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:30:16,119 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:30:16,119 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:30:16,119 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:30:16,119 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-15 23:30:16,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:30:16,119 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:30:16,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 23:30:16,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:30:16 BoogieIcfgContainer [2019-11-15 23:30:16,126 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:30:16,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:30:16,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:30:16,126 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:30:16,127 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:30:12" (3/4) ... [2019-11-15 23:30:16,130 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:30:16,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:30:16,133 INFO L168 Benchmark]: Toolchain (without parser) took 4347.63 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 224.9 MB). Free memory was 945.1 MB in the beginning and 1.0 GB in the end (delta: -77.6 MB). Peak memory consumption was 147.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:30:16,133 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:30:16,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -193.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:30:16,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:30:16,135 INFO L168 Benchmark]: Boogie Preprocessor took 13.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:30:16,135 INFO L168 Benchmark]: RCFGBuilder took 208.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:30:16,136 INFO L168 Benchmark]: BuchiAutomizer took 3754.69 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.3 MB). Peak memory consumption was 178.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:30:16,136 INFO L168 Benchmark]: Witness Printer took 4.30 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:30:16,139 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 329.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -193.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 208.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3754.69 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.3 MB). Peak memory consumption was 178.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.30 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 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 3.7s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 2.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. 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: 34ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...