./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_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_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 08:20:10,908 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 08:20:10,909 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 08:20:10,917 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 08:20:10,917 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 08:20:10,917 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 08:20:10,918 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 08:20:10,919 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 08:20:10,920 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 08:20:10,921 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 08:20:10,922 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 08:20:10,922 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 08:20:10,923 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 08:20:10,923 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 08:20:10,924 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 08:20:10,924 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 08:20:10,925 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 08:20:10,926 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 08:20:10,927 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 08:20:10,929 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 08:20:10,929 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 08:20:10,930 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 08:20:10,932 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 08:20:10,932 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 08:20:10,932 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 08:20:10,933 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 08:20:10,933 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 08:20:10,934 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 08:20:10,935 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 08:20:10,935 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 08:20:10,935 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 08:20:10,936 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 08:20:10,936 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 08:20:10,936 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 08:20:10,937 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 08:20:10,937 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 08:20:10,938 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 08:20:10,948 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 08:20:10,948 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 08:20:10,949 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 08:20:10,949 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 08:20:10,949 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 08:20:10,950 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 08:20:10,950 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 08:20:10,950 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 08:20:10,950 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 08:20:10,950 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 08:20:10,950 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 08:20:10,951 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 08:20:10,951 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 08:20:10,951 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 08:20:10,951 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 08:20:10,951 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 08:20:10,951 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 08:20:10,951 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 08:20:10,952 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 08:20:10,952 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 08:20:10,952 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 08:20:10,952 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 08:20:10,952 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 08:20:10,952 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 08:20:10,952 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 08:20:10,953 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 08:20:10,953 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 08:20:10,953 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 08:20:10,954 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 08:20:10,954 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_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 -> f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 [2018-11-23 08:20:10,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 08:20:10,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 08:20:10,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 08:20:10,985 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 08:20:10,986 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 08:20:10,986 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-23 08:20:11,022 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/data/fecf9b4c3/c330191566a1414b864f6586271b0f0f/FLAGb6929fa01 [2018-11-23 08:20:11,417 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 08:20:11,417 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-23 08:20:11,421 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/data/fecf9b4c3/c330191566a1414b864f6586271b0f0f/FLAGb6929fa01 [2018-11-23 08:20:11,431 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/data/fecf9b4c3/c330191566a1414b864f6586271b0f0f [2018-11-23 08:20:11,433 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 08:20:11,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 08:20:11,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 08:20:11,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 08:20:11,437 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 08:20:11,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:20:11" (1/1) ... [2018-11-23 08:20:11,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c8d80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11, skipping insertion in model container [2018-11-23 08:20:11,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:20:11" (1/1) ... [2018-11-23 08:20:11,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 08:20:11,460 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 08:20:11,555 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:20:11,557 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 08:20:11,566 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:20:11,573 INFO L195 MainTranslator]: Completed translation [2018-11-23 08:20:11,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11 WrapperNode [2018-11-23 08:20:11,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 08:20:11,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 08:20:11,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 08:20:11,574 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 08:20:11,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11" (1/1) ... [2018-11-23 08:20:11,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11" (1/1) ... [2018-11-23 08:20:11,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 08:20:11,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 08:20:11,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 08:20:11,600 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 08:20:11,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11" (1/1) ... [2018-11-23 08:20:11,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11" (1/1) ... [2018-11-23 08:20:11,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11" (1/1) ... [2018-11-23 08:20:11,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11" (1/1) ... [2018-11-23 08:20:11,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11" (1/1) ... [2018-11-23 08:20:11,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11" (1/1) ... [2018-11-23 08:20:11,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11" (1/1) ... [2018-11-23 08:20:11,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 08:20:11,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 08:20:11,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 08:20:11,612 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 08:20:11,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 08:20:11,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 08:20:11,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 08:20:11,799 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 08:20:11,799 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 08:20:11,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:20:11 BoogieIcfgContainer [2018-11-23 08:20:11,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 08:20:11,800 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 08:20:11,800 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 08:20:11,803 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 08:20:11,803 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 08:20:11,804 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 08:20:11" (1/3) ... [2018-11-23 08:20:11,804 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d0b173d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 08:20:11, skipping insertion in model container [2018-11-23 08:20:11,804 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 08:20:11,805 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:20:11" (2/3) ... [2018-11-23 08:20:11,805 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d0b173d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 08:20:11, skipping insertion in model container [2018-11-23 08:20:11,805 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 08:20:11,805 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:20:11" (3/3) ... [2018-11-23 08:20:11,806 INFO L375 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-23 08:20:11,843 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 08:20:11,843 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 08:20:11,843 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 08:20:11,843 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 08:20:11,843 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 08:20:11,843 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 08:20:11,844 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 08:20:11,844 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 08:20:11,844 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 08:20:11,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 08:20:11,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 08:20:11,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:20:11,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:20:11,872 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 08:20:11,872 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 08:20:11,872 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 08:20:11,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 08:20:11,873 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 08:20:11,873 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:20:11,873 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:20:11,873 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 08:20:11,873 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 08:20:11,878 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L17-2true [2018-11-23 08:20:11,878 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);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 08:20:11,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:11,883 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-23 08:20:11,884 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:11,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:11,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:11,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:20:11,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:11,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:11,941 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2018-11-23 08:20:11,941 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:11,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:11,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:11,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:20:11,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:11,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:11,950 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2018-11-23 08:20:11,950 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:11,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:11,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:11,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:20:11,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:12,020 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:20:12,021 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:20:12,021 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:20:12,021 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:20:12,021 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:20:12,021 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:20:12,021 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:20:12,021 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:20:12,021 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 08:20:12,021 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:20:12,022 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:20:12,039 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 08:20:12,054 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 08:20:12,057 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 08:20:12,151 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:20:12,152 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 08:20:12,155 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:12,155 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:12,176 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:12,177 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_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 08:20:12,179 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:12,179 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:12,195 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:12,195 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_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 08:20:12,197 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:12,197 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 08:20:12,214 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:20:12,214 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:12,241 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 08:20:12,242 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:20:12,242 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:20:12,242 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:20:12,242 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:20:12,242 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:20:12,243 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:20:12,243 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:20:12,243 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:20:12,243 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 08:20:12,243 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:20:12,243 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:20:12,244 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 08:20:12,247 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 08:20:12,249 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 08:20:12,333 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:20:12,337 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:20:12,338 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 08:20:12,339 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:12,339 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:12,340 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:12,340 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:12,343 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 08:20:12,343 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 08:20:12,350 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:20:12,350 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 08:20:12,351 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:12,351 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:12,351 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:12,351 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:12,353 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 08:20:12,353 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 08:20:12,359 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:20:12,359 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 08:20:12,359 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:12,360 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:20:12,360 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:12,360 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:12,360 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:12,361 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:20:12,361 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:20:12,367 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:20:12,372 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 08:20:12,372 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 08:20:12,374 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:20:12,374 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:20:12,374 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:20:12,374 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 08:20:12,375 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:20:12,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:12,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:12,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:12,425 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 08:20:12,435 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 08:20:12,436 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-23 08:20:12,466 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 08:20:12,467 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 08:20:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 08:20:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-23 08:20:12,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-23 08:20:12,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:20:12,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-23 08:20:12,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:20:12,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-23 08:20:12,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:20:12,472 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2018-11-23 08:20:12,474 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 08:20:12,476 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-11-23 08:20:12,477 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 08:20:12,477 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-23 08:20:12,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-23 08:20:12,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:20:12,478 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 08:20:12,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-23 08:20:12,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-11-23 08:20:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-23 08:20:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2018-11-23 08:20:12,494 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2018-11-23 08:20:12,494 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2018-11-23 08:20:12,494 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 08:20:12,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2018-11-23 08:20:12,495 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 08:20:12,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:20:12,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:20:12,495 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 08:20:12,495 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 08:20:12,496 INFO L794 eck$LassoCheckResult]: Stem: 74#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 70#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 72#L19-2 [2018-11-23 08:20:12,496 INFO L796 eck$LassoCheckResult]: Loop: 72#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 72#L19-2 [2018-11-23 08:20:12,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:12,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-23 08:20:12,496 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:12,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:12,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:12,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:20:12,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:12,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:12,500 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2018-11-23 08:20:12,500 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:12,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:12,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:12,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:20:12,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:12,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:12,505 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2018-11-23 08:20:12,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:12,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:12,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:12,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:20:12,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:12,556 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:20:12,556 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:20:12,556 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:20:12,556 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:20:12,556 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:20:12,556 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:20:12,556 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:20:12,556 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:20:12,557 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-23 08:20:12,557 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:20:12,557 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:20:12,558 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 08:20:12,560 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 08:20:12,561 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 08:20:12,563 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 08:20:12,564 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 08:20:12,566 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 08:20:12,606 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:20:12,606 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 08:20:12,634 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:12,634 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:12,650 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:12,650 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_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 08:20:12,653 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:12,653 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:12,659 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:12,659 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 08:20:12,685 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:12,685 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:12,688 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:12,688 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 08:20:12,711 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:12,711 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:12,713 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:12,713 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/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 [2018-11-23 08:20:12,729 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:12,729 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:12,754 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:12,754 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_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 08:20:12,758 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:12,758 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/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 08:20:12,776 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:20:12,776 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:24,830 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-23 08:20:24,836 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:20:24,837 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:20:24,837 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:20:24,837 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:20:24,837 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:20:24,837 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:20:24,837 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:20:24,837 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:20:24,837 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-23 08:20:24,837 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:20:24,837 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:20:24,839 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 08:20:24,842 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 08:20:24,850 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 08:20:24,852 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 08:20:24,853 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 08:20:24,856 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 08:20:24,898 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:20:24,898 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:20:24,899 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 08:20:24,900 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:24,900 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:20:24,900 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:24,900 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:24,900 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:24,901 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:20:24,901 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:20:24,902 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:20:24,902 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 08:20:24,903 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:24,903 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:24,903 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:24,903 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:24,904 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 08:20:24,905 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 08:20:24,908 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:20:24,908 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 08:20:24,909 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:24,909 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:20:24,909 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:24,909 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:24,909 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:24,910 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:20:24,910 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:20:24,911 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:20:24,911 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 08:20:24,911 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:24,911 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:20:24,912 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:24,912 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:24,912 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:24,912 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:20:24,912 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:20:24,913 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:20:24,913 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 08:20:24,914 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:24,914 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:24,914 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:24,914 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:24,915 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 08:20:24,915 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 08:20:24,920 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:20:24,920 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 08:20:24,921 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:24,921 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:24,921 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:24,921 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:24,924 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 08:20:24,924 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 08:20:24,957 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:20:24,971 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-23 08:20:24,971 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 08:20:24,972 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:20:24,973 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-23 08:20:24,974 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:20:24,974 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 [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-23 08:20:24,979 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-23 08:20:25,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:25,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:25,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:25,044 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 08:20:25,044 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 08:20:25,044 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2018-11-23 08:20:25,082 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 08:20:25,083 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 08:20:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 08:20:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 08:20:25,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2018-11-23 08:20:25,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:20:25,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2018-11-23 08:20:25,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:20:25,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-23 08:20:25,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:20:25,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2018-11-23 08:20:25,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 08:20:25,085 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2018-11-23 08:20:25,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 08:20:25,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-23 08:20:25,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2018-11-23 08:20:25,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:20:25,086 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-11-23 08:20:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2018-11-23 08:20:25,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2018-11-23 08:20:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-23 08:20:25,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-11-23 08:20:25,087 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-23 08:20:25,087 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-23 08:20:25,087 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 08:20:25,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-11-23 08:20:25,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 08:20:25,088 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:20:25,088 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:20:25,088 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-11-23 08:20:25,088 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 08:20:25,088 INFO L794 eck$LassoCheckResult]: Stem: 132#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 127#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 128#L19-2 assume !(main_~y~0 < main_~x~0); 131#L19-3 main_~x~0 := main_~x~0 - 1; 129#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 130#L19-2 [2018-11-23 08:20:25,089 INFO L796 eck$LassoCheckResult]: Loop: 130#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 130#L19-2 [2018-11-23 08:20:25,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,089 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2018-11-23 08:20:25,089 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:25,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:25,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:20:25,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,095 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2018-11-23 08:20:25,095 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:25,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:25,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:20:25,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,099 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2018-11-23 08:20:25,099 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:25,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:25,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,100 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:20:25,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:25,138 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 08:20:25,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 08:20:25,140 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 08:20:25,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:20:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:25,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:25,162 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 08:20:25,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 08:20:25,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-23 08:20:25,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 08:20:25,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-23 08:20:25,188 INFO L87 Difference]: Start difference. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 7 states. [2018-11-23 08:20:25,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:20:25,232 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2018-11-23 08:20:25,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 08:20:25,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2018-11-23 08:20:25,233 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 08:20:25,233 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 8 states and 10 transitions. [2018-11-23 08:20:25,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-23 08:20:25,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-23 08:20:25,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2018-11-23 08:20:25,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:20:25,234 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-23 08:20:25,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2018-11-23 08:20:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-11-23 08:20:25,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 08:20:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-11-23 08:20:25,235 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-23 08:20:25,235 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-23 08:20:25,235 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 08:20:25,235 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-11-23 08:20:25,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 08:20:25,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:20:25,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:20:25,236 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-23 08:20:25,236 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 08:20:25,236 INFO L794 eck$LassoCheckResult]: Stem: 184#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 180#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 181#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 186#L19-2 assume !(main_~y~0 < main_~x~0); 185#L19-3 main_~x~0 := main_~x~0 - 1; 182#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 183#L19-2 [2018-11-23 08:20:25,236 INFO L796 eck$LassoCheckResult]: Loop: 183#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 183#L19-2 [2018-11-23 08:20:25,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,236 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2018-11-23 08:20:25,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:25,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:25,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:20:25,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,243 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 3 times [2018-11-23 08:20:25,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:25,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:25,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,244 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:20:25,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 3 times [2018-11-23 08:20:25,247 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:25,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:25,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:20:25,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:20:25,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 08:20:25,294 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 08:20:25,303 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 08:20:25,326 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 08:20:25,326 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 08:20:25,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:20:25,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 08:20:25,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-23 08:20:25,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 08:20:25,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-23 08:20:25,405 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 8 states. [2018-11-23 08:20:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:20:25,454 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2018-11-23 08:20:25,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 08:20:25,454 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2018-11-23 08:20:25,455 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 08:20:25,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 12 transitions. [2018-11-23 08:20:25,455 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-23 08:20:25,456 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-23 08:20:25,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2018-11-23 08:20:25,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:20:25,456 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-11-23 08:20:25,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2018-11-23 08:20:25,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-11-23 08:20:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-23 08:20:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-11-23 08:20:25,457 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-23 08:20:25,457 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-23 08:20:25,457 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 08:20:25,457 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2018-11-23 08:20:25,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 08:20:25,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:20:25,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:20:25,458 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2018-11-23 08:20:25,458 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 08:20:25,458 INFO L794 eck$LassoCheckResult]: Stem: 243#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 238#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 239#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 244#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 245#L19-2 assume !(main_~y~0 < main_~x~0); 242#L19-3 main_~x~0 := main_~x~0 - 1; 240#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 241#L19-2 [2018-11-23 08:20:25,458 INFO L796 eck$LassoCheckResult]: Loop: 241#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 241#L19-2 [2018-11-23 08:20:25,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1360231782, now seen corresponding path program 4 times [2018-11-23 08:20:25,459 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:25,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:25,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:20:25,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,466 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 4 times [2018-11-23 08:20:25,466 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:25,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:25,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:20:25,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,470 INFO L82 PathProgramCache]: Analyzing trace with hash 782487737, now seen corresponding path program 5 times [2018-11-23 08:20:25,470 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:20:25,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:20:25,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:20:25,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:20:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:20:25,511 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:20:25,511 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:20:25,511 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:20:25,511 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:20:25,511 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:20:25,511 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:20:25,511 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:20:25,511 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:20:25,511 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-11-23 08:20:25,511 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:20:25,511 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:20:25,512 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 08:20:25,514 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 08:20:25,515 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 08:20:25,516 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 08:20:25,518 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 08:20:25,519 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 08:20:25,556 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:20:25,556 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:20:25,559 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:25,559 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:25,561 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:25,561 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:20:25,576 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:25,577 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:25,579 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:25,579 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:20:25,594 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:25,594 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:25,598 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:25,598 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/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 [2018-11-23 08:20:25,613 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:25,613 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:25,628 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:25,628 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/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 [2018-11-23 08:20:25,631 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:25,631 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:25,646 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:20:25,646 INFO L448 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/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/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 [2018-11-23 08:20:25,649 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:20:25,649 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_143cc3dc-8208-40e5-91b4-1ab46ab3ddd1/bin-2019/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 [2018-11-23 08:20:25,667 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:20:25,667 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:20:25,732 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 08:20:25,734 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:20:25,734 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:20:25,734 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:20:25,734 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:20:25,734 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:20:25,735 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:20:25,735 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:20:25,735 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:20:25,735 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-11-23 08:20:25,735 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:20:25,735 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:20:25,736 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 08:20:25,737 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 08:20:25,738 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 08:20:25,739 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 08:20:25,741 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 08:20:25,756 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 08:20:25,796 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:20:25,796 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:20:25,797 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 08:20:25,797 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:25,797 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:20:25,797 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:25,797 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:25,797 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:25,813 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:20:25,813 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:20:25,814 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:20:25,814 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 08:20:25,814 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:25,815 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:20:25,815 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:25,815 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:25,815 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:25,815 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:20:25,815 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:20:25,816 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:20:25,816 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 08:20:25,816 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:25,817 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:20:25,817 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:25,817 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:25,817 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:25,817 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:20:25,817 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:20:25,822 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:20:25,822 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 08:20:25,823 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:25,823 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:25,823 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:25,823 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:25,824 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 08:20:25,824 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 08:20:25,828 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:20:25,829 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 08:20:25,829 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:20:25,829 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:20:25,829 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:20:25,829 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:20:25,831 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 08:20:25,831 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 08:20:25,848 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:20:25,859 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-23 08:20:25,860 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-23 08:20:25,860 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:20:25,861 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-23 08:20:25,861 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:20:25,861 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-23 08:20:25,870 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-23 08:20:25,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:25,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:25,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:25,894 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 08:20:25,894 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 08:20:25,895 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 08:20:25,935 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 15 states and 19 transitions. Complement of second has 5 states. [2018-11-23 08:20:25,937 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 08:20:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 08:20:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 08:20:25,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-23 08:20:25,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:20:25,937 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:20:25,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:25,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:25,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:25,962 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 08:20:25,963 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 08:20:25,963 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 08:20:25,978 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 15 states and 19 transitions. Complement of second has 5 states. [2018-11-23 08:20:25,978 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 08:20:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 08:20:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 08:20:25,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-23 08:20:25,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:20:25,979 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:20:25,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:20:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:25,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:20:26,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:20:26,002 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 08:20:26,003 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 08:20:26,003 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 08:20:26,021 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 13 transitions. Complement of second has 4 states. [2018-11-23 08:20:26,022 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 08:20:26,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 08:20:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-23 08:20:26,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-23 08:20:26,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:20:26,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-23 08:20:26,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:20:26,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-23 08:20:26,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:20:26,023 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2018-11-23 08:20:26,023 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 08:20:26,024 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2018-11-23 08:20:26,024 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 08:20:26,024 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 08:20:26,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 08:20:26,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 08:20:26,024 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:20:26,024 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:20:26,024 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:20:26,024 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-23 08:20:26,024 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 08:20:26,024 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 08:20:26,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 08:20:26,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 08:20:26 BoogieIcfgContainer [2018-11-23 08:20:26,029 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 08:20:26,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 08:20:26,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 08:20:26,032 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 08:20:26,032 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:20:11" (3/4) ... [2018-11-23 08:20:26,035 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 08:20:26,035 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 08:20:26,036 INFO L168 Benchmark]: Toolchain (without parser) took 14602.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 214.4 MB). Free memory was 959.1 MB in the beginning and 1.2 GB in the end (delta: -207.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-11-23 08:20:26,037 INFO L168 Benchmark]: CDTParser took 0.12 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 08:20:26,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.92 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 08:20:26,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.89 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 08:20:26,038 INFO L168 Benchmark]: Boogie Preprocessor took 12.24 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:20:26,038 INFO L168 Benchmark]: RCFGBuilder took 187.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 08:20:26,039 INFO L168 Benchmark]: BuchiAutomizer took 14229.32 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -35.7 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. [2018-11-23 08:20:26,039 INFO L168 Benchmark]: Witness Printer took 3.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:20:26,042 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 139.92 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 24.89 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.24 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 187.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 14229.32 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -35.7 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 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 5 terminating modules (2 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 x + -1 * y and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.1s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 13.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 19 SDtfs, 26 SDslu, 7 SDs, 0 SdLazy, 84 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax165 hnf98 lsp59 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf92 smp100 dnf100 smp100 tf102 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 12.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...