./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/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 ff3652fa62b489d4e6a4a85c8349c06d13bd2232 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 07:50:27,818 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 07:50:27,819 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 07:50:27,826 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 07:50:27,826 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 07:50:27,827 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 07:50:27,828 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 07:50:27,829 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 07:50:27,830 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 07:50:27,830 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 07:50:27,831 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 07:50:27,831 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 07:50:27,832 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 07:50:27,833 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 07:50:27,833 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 07:50:27,834 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 07:50:27,834 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 07:50:27,836 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 07:50:27,837 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 07:50:27,838 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 07:50:27,839 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 07:50:27,839 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 07:50:27,841 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 07:50:27,841 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 07:50:27,841 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 07:50:27,842 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 07:50:27,843 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 07:50:27,843 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 07:50:27,844 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 07:50:27,844 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 07:50:27,845 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 07:50:27,845 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 07:50:27,845 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 07:50:27,845 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 07:50:27,846 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 07:50:27,846 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 07:50:27,847 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 07:50:27,856 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 07:50:27,856 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 07:50:27,857 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 07:50:27,857 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 07:50:27,857 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 07:50:27,857 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 07:50:27,858 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 07:50:27,858 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 07:50:27,858 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 07:50:27,858 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 07:50:27,858 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 07:50:27,858 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 07:50:27,858 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 07:50:27,859 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 07:50:27,859 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 07:50:27,859 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 07:50:27,859 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 07:50:27,859 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 07:50:27,859 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 07:50:27,859 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 07:50:27,859 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 07:50:27,859 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 07:50:27,860 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 07:50:27,860 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 07:50:27,860 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 07:50:27,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 07:50:27,860 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 07:50:27,860 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 07:50:27,861 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 07:50:27,861 INFO L133 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/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/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 -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2018-11-23 07:50:27,884 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 07:50:27,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 07:50:27,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 07:50:27,896 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 07:50:27,896 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 07:50:27,896 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-23 07:50:27,933 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/data/4b1468861/ef085565848d420a9ea3d9b2b073a4e9/FLAG7f5c0c52f [2018-11-23 07:50:28,263 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 07:50:28,263 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-23 07:50:28,268 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/data/4b1468861/ef085565848d420a9ea3d9b2b073a4e9/FLAG7f5c0c52f [2018-11-23 07:50:28,694 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/data/4b1468861/ef085565848d420a9ea3d9b2b073a4e9 [2018-11-23 07:50:28,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 07:50:28,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 07:50:28,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 07:50:28,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 07:50:28,700 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 07:50:28,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:50:28" (1/1) ... [2018-11-23 07:50:28,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c4586cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28, skipping insertion in model container [2018-11-23 07:50:28,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:50:28" (1/1) ... [2018-11-23 07:50:28,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 07:50:28,721 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 07:50:28,844 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:50:28,846 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 07:50:28,855 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:50:28,863 INFO L195 MainTranslator]: Completed translation [2018-11-23 07:50:28,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28 WrapperNode [2018-11-23 07:50:28,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 07:50:28,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 07:50:28,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 07:50:28,864 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 07:50:28,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28" (1/1) ... [2018-11-23 07:50:28,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28" (1/1) ... [2018-11-23 07:50:28,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 07:50:28,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 07:50:28,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 07:50:28,883 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 07:50:28,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28" (1/1) ... [2018-11-23 07:50:28,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28" (1/1) ... [2018-11-23 07:50:28,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28" (1/1) ... [2018-11-23 07:50:28,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28" (1/1) ... [2018-11-23 07:50:28,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28" (1/1) ... [2018-11-23 07:50:28,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28" (1/1) ... [2018-11-23 07:50:28,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28" (1/1) ... [2018-11-23 07:50:28,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 07:50:28,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 07:50:28,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 07:50:28,894 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 07:50:28,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/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 [2018-11-23 07:50:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 07:50:28,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 07:50:29,046 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 07:50:29,046 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 07:50:29,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:50:29 BoogieIcfgContainer [2018-11-23 07:50:29,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 07:50:29,047 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 07:50:29,047 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 07:50:29,049 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 07:50:29,050 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 07:50:29,050 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 07:50:28" (1/3) ... [2018-11-23 07:50:29,051 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f5c9aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 07:50:29, skipping insertion in model container [2018-11-23 07:50:29,051 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 07:50:29,051 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:50:28" (2/3) ... [2018-11-23 07:50:29,051 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f5c9aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 07:50:29, skipping insertion in model container [2018-11-23 07:50:29,051 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 07:50:29,051 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:50:29" (3/3) ... [2018-11-23 07:50:29,053 INFO L375 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-23 07:50:29,090 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 07:50:29,090 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 07:50:29,090 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 07:50:29,090 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 07:50:29,090 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 07:50:29,090 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 07:50:29,090 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 07:50:29,090 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 07:50:29,091 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 07:50:29,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 07:50:29,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:50:29,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 07:50:29,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 07:50:29,116 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 07:50:29,116 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 07:50:29,117 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 07:50:29,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 07:50:29,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:50:29,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 07:50:29,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 07:50:29,118 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 07:50:29,118 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 07:50:29,125 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L17-2true [2018-11-23 07:50:29,125 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~x~0 >= 0);main_~y~0 := 1; 6#L19-2true assume !(main_~y~0 < main_~x~0); 5#L19-3true main_~x~0 := main_~x~0 - 1; 3#L17-2true [2018-11-23 07:50:29,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:29,130 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-23 07:50:29,131 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:50:29,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:50:29,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:50:29,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:29,188 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2018-11-23 07:50:29,189 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:50:29,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:50:29,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:50:29,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:29,200 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2018-11-23 07:50:29,200 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:50:29,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:50:29,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:50:29,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,259 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:50:29,260 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:50:29,260 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:50:29,260 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:50:29,260 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 07:50:29,260 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:50:29,260 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:50:29,260 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:50:29,261 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 07:50:29,261 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:50:29,261 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:50:29,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,345 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:50:29,345 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/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 [2018-11-23 07:50:29,350 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:50:29,350 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:50:29,379 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:50:29,379 INFO L448 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/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/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 [2018-11-23 07:50:29,382 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:50:29,383 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:50:29,399 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:50:29,400 INFO L448 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/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/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 [2018-11-23 07:50:29,406 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:50:29,406 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/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 [2018-11-23 07:50:29,423 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:50:29,423 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:50:29,443 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 07:50:29,444 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:50:29,444 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:50:29,444 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:50:29,444 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:50:29,444 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 07:50:29,445 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:50:29,445 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:50:29,445 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:50:29,445 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 07:50:29,445 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:50:29,445 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:50:29,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,538 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:50:29,542 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 07:50:29,544 INFO L122 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 [2018-11-23 07:50:29,546 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:50:29,546 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:50:29,546 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:50:29,546 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:50:29,550 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 07:50:29,550 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 07:50:29,557 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:50:29,557 INFO L122 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 [2018-11-23 07:50:29,558 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:50:29,558 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:50:29,558 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:50:29,558 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:50:29,560 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 07:50:29,560 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 07:50:29,567 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:50:29,567 INFO L122 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 [2018-11-23 07:50:29,568 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:50:29,568 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 07:50:29,568 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:50:29,568 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:50:29,569 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:50:29,569 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 07:50:29,569 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 07:50:29,575 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 07:50:29,579 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 07:50:29,580 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 07:50:29,581 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 07:50:29,581 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 07:50:29,581 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 07:50:29,581 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-23 07:50:29,582 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 07:50:29,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:29,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:50:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:29,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:50:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:50:29,655 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 [2018-11-23 07:50:29,655 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-23 07:50:29,694 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2018-11-23 07:50:29,695 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 [2018-11-23 07:50:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 07:50:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-23 07:50:29,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-23 07:50:29,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:50:29,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-23 07:50:29,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:50:29,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-23 07:50:29,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:50:29,700 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2018-11-23 07:50:29,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 07:50:29,705 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-11-23 07:50:29,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 07:50:29,706 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-23 07:50:29,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-23 07:50:29,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 07:50:29,707 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 07:50:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-23 07:50:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-11-23 07:50:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-23 07:50:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2018-11-23 07:50:29,730 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2018-11-23 07:50:29,730 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2018-11-23 07:50:29,730 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 07:50:29,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2018-11-23 07:50:29,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 07:50:29,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 07:50:29,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 07:50:29,731 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 07:50:29,731 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 07:50:29,731 INFO L794 eck$LassoCheckResult]: Stem: 74#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 70#L17-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 72#L19-2 [2018-11-23 07:50:29,731 INFO L796 eck$LassoCheckResult]: Loop: 72#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 72#L19-2 [2018-11-23 07:50:29,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:29,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-23 07:50:29,732 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:50:29,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:50:29,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:50:29,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:29,737 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2018-11-23 07:50:29,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:50:29,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:50:29,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:50:29,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:29,742 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2018-11-23 07:50:29,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:50:29,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:50:29,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:50:29,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:29,752 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:50:29,752 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:50:29,752 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:50:29,753 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:50:29,753 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 07:50:29,753 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:50:29,753 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:50:29,753 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:50:29,753 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 07:50:29,753 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:50:29,753 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:50:29,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,794 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:50:29,794 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/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 [2018-11-23 07:50:29,798 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:50:29,798 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:50:29,813 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:50:29,813 INFO L448 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/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:50:29,818 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:50:29,818 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:50:29,833 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:50:29,834 INFO L448 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/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/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 [2018-11-23 07:50:29,837 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:50:29,837 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/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 [2018-11-23 07:50:29,853 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:50:29,853 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:50:29,943 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 07:50:29,944 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:50:29,944 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:50:29,944 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:50:29,944 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:50:29,944 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 07:50:29,944 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:50:29,944 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:50:29,944 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:50:29,945 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 07:50:29,945 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:50:29,945 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:50:29,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:29,976 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:50:29,977 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 07:50:29,977 INFO L122 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 [2018-11-23 07:50:29,978 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:50:29,978 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:50:29,978 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:50:29,978 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:50:29,980 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 07:50:29,980 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 07:50:29,984 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:50:29,984 INFO L122 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 [2018-11-23 07:50:29,985 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:50:29,985 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:50:29,985 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:50:29,985 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:50:29,987 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 07:50:29,987 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 07:50:29,992 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:50:29,992 INFO L122 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 [2018-11-23 07:50:29,993 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:50:29,993 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 07:50:29,993 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:50:29,993 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:50:29,994 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:50:29,994 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 07:50:29,994 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 07:50:29,997 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 07:50:30,001 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 07:50:30,002 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 07:50:30,002 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 07:50:30,002 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 07:50:30,002 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 07:50:30,002 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-23 07:50:30,003 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 07:50:30,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:30,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:50:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:30,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:50:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:50:30,051 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 07:50:30,051 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2018-11-23 07:50:30,061 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2018-11-23 07:50:30,062 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 [2018-11-23 07:50:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 07:50:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 07:50:30,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2018-11-23 07:50:30,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:50:30,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2018-11-23 07:50:30,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:50:30,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-23 07:50:30,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:50:30,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2018-11-23 07:50:30,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 07:50:30,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2018-11-23 07:50:30,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 07:50:30,065 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-23 07:50:30,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2018-11-23 07:50:30,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 07:50:30,065 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-11-23 07:50:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2018-11-23 07:50:30,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2018-11-23 07:50:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-23 07:50:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-11-23 07:50:30,066 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-23 07:50:30,066 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-23 07:50:30,066 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 07:50:30,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-11-23 07:50:30,067 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 07:50:30,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 07:50:30,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 07:50:30,067 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-11-23 07:50:30,067 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 07:50:30,068 INFO L794 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 118#L17-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 119#L19-2 assume !(main_~y~0 < main_~x~0); 123#L19-3 main_~x~0 := main_~x~0 - 1; 120#L17-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 121#L19-2 [2018-11-23 07:50:30,068 INFO L796 eck$LassoCheckResult]: Loop: 121#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 121#L19-2 [2018-11-23 07:50:30,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2018-11-23 07:50:30,068 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:50:30,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:50:30,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:30,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:50:30,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:30,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:30,074 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2018-11-23 07:50:30,074 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:50:30,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:50:30,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:30,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:50:30,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:50:30,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:30,078 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2018-11-23 07:50:30,078 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:50:30,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:50:30,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:30,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:50:30,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:50:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:50:30,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:50:30,125 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:50:30,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:50:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:30,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:50:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:50:30,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:50:30,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-23 07:50:30,188 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:50:30,188 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:50:30,189 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:50:30,189 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:50:30,189 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 07:50:30,189 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:50:30,189 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:50:30,189 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:50:30,189 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 07:50:30,189 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:50:30,189 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:50:30,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:30,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:30,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:30,224 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:50:30,224 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:50:30,234 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:50:30,234 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a0a97c5-dda7-4512-96d6-05989bac5aee/bin-2019/uautomizer/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:50:30,262 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:50:30,262 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:50:30,354 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 07:50:30,355 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:50:30,355 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:50:30,355 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:50:30,355 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:50:30,355 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 07:50:30,356 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:50:30,356 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:50:30,356 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:50:30,356 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 07:50:30,356 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:50:30,356 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:50:30,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:30,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:30,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:50:30,385 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:50:30,385 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 07:50:30,385 INFO L122 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 [2018-11-23 07:50:30,386 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:50:30,386 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 07:50:30,388 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:50:30,388 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:50:30,388 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:50:30,388 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 07:50:30,389 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 07:50:30,390 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 07:50:30,394 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-23 07:50:30,394 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 07:50:30,394 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 07:50:30,395 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 07:50:30,395 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 07:50:30,395 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-23 07:50:30,395 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 07:50:30,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:30,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:50:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:30,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:50:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:50:30,419 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 07:50:30,419 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 07:50:30,433 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2018-11-23 07:50:30,433 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 [2018-11-23 07:50:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 07:50:30,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 07:50:30,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2018-11-23 07:50:30,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:50:30,434 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 07:50:30,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:30,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:50:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:30,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:50:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:50:30,449 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 07:50:30,449 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 07:50:30,463 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2018-11-23 07:50:30,463 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 [2018-11-23 07:50:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 07:50:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 07:50:30,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2018-11-23 07:50:30,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:50:30,464 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 07:50:30,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:50:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:30,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:50:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:50:30,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:50:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:50:30,488 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 1 loop predicates [2018-11-23 07:50:30,488 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 07:50:30,498 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2018-11-23 07:50:30,498 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 [2018-11-23 07:50:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 07:50:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-23 07:50:30,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2018-11-23 07:50:30,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:50:30,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-23 07:50:30,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:50:30,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 07:50:30,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:50:30,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2018-11-23 07:50:30,500 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 07:50:30,500 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2018-11-23 07:50:30,500 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 07:50:30,500 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 07:50:30,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 07:50:30,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 07:50:30,500 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:50:30,500 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:50:30,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 07:50:30,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-23 07:50:30,504 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 7 states. [2018-11-23 07:50:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:50:30,506 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-23 07:50:30,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 07:50:30,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-23 07:50:30,507 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 07:50:30,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 07:50:30,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 07:50:30,507 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 07:50:30,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 07:50:30,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 07:50:30,507 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:50:30,508 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:50:30,508 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:50:30,508 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 07:50:30,508 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 07:50:30,508 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 07:50:30,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 07:50:30,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 07:50:30 BoogieIcfgContainer [2018-11-23 07:50:30,513 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 07:50:30,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 07:50:30,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 07:50:30,514 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 07:50:30,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:50:29" (3/4) ... [2018-11-23 07:50:30,517 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 07:50:30,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 07:50:30,518 INFO L168 Benchmark]: Toolchain (without parser) took 1821.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 958.0 MB in the beginning and 932.0 MB in the end (delta: 26.0 MB). Peak memory consumption was 163.4 MB. Max. memory is 11.5 GB. [2018-11-23 07:50:30,519 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:50:30,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.69 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:50:30,520 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.74 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:50:30,520 INFO L168 Benchmark]: Boogie Preprocessor took 11.08 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:50:30,521 INFO L168 Benchmark]: RCFGBuilder took 152.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -178.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2018-11-23 07:50:30,521 INFO L168 Benchmark]: BuchiAutomizer took 1466.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 932.0 MB in the end (delta: 190.6 MB). Peak memory consumption was 190.6 MB. Max. memory is 11.5 GB. [2018-11-23 07:50:30,521 INFO L168 Benchmark]: Witness Printer took 3.57 ms. Allocated memory is still 1.2 GB. Free memory is still 932.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:50:30,524 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.69 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.74 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.08 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 152.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -178.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1466.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 932.0 MB in the end (delta: 190.6 MB). Peak memory consumption was 190.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.57 ms. Allocated memory is still 1.2 GB. Free memory is still 932.0 MB. 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 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 6 SDs, 0 SdLazy, 39 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf111 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...