./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_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_41153c85-1765-4b26-89cb-5ad897a804a1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/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 e09e2fe0d9f978fd259d1d805e514754ab2def67 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:17:24,757 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 06:17:24,758 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 06:17:24,765 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 06:17:24,765 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 06:17:24,766 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 06:17:24,766 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 06:17:24,767 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 06:17:24,768 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 06:17:24,769 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 06:17:24,770 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 06:17:24,770 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 06:17:24,770 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 06:17:24,771 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 06:17:24,772 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 06:17:24,773 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 06:17:24,773 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 06:17:24,774 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 06:17:24,775 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 06:17:24,776 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 06:17:24,777 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 06:17:24,777 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 06:17:24,779 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 06:17:24,779 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 06:17:24,779 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 06:17:24,780 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 06:17:24,781 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 06:17:24,781 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 06:17:24,782 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 06:17:24,782 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 06:17:24,783 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 06:17:24,783 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 06:17:24,783 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 06:17:24,783 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 06:17:24,785 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 06:17:24,785 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 06:17:24,785 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 06:17:24,794 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 06:17:24,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 06:17:24,795 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 06:17:24,795 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 06:17:24,795 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 06:17:24,795 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 06:17:24,795 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 06:17:24,795 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 06:17:24,796 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 06:17:24,796 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 06:17:24,796 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 06:17:24,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 06:17:24,797 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 06:17:24,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 06:17:24,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 06:17:24,797 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 06:17:24,797 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 06:17:24,797 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 06:17:24,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 06:17:24,798 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 06:17:24,799 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 06:17:24,799 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 06:17:24,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 06:17:24,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 06:17:24,799 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 06:17:24,799 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 06:17:24,799 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 06:17:24,800 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 06:17:24,800 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 06:17:24,800 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_41153c85-1765-4b26-89cb-5ad897a804a1/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 -> e09e2fe0d9f978fd259d1d805e514754ab2def67 [2018-11-23 06:17:24,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 06:17:24,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 06:17:24,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 06:17:24,835 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 06:17:24,836 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 06:17:24,836 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-11-23 06:17:24,873 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/bin-2019/uautomizer/data/54f3623d2/2eb1a54b2cb843088f48784f25ba9967/FLAGef39dff91 [2018-11-23 06:17:25,272 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 06:17:25,273 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-11-23 06:17:25,277 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/bin-2019/uautomizer/data/54f3623d2/2eb1a54b2cb843088f48784f25ba9967/FLAGef39dff91 [2018-11-23 06:17:25,287 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/bin-2019/uautomizer/data/54f3623d2/2eb1a54b2cb843088f48784f25ba9967 [2018-11-23 06:17:25,289 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 06:17:25,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 06:17:25,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 06:17:25,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 06:17:25,293 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 06:17:25,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:17:25" (1/1) ... [2018-11-23 06:17:25,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f004d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25, skipping insertion in model container [2018-11-23 06:17:25,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:17:25" (1/1) ... [2018-11-23 06:17:25,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 06:17:25,311 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 06:17:25,406 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 06:17:25,408 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 06:17:25,416 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 06:17:25,424 INFO L195 MainTranslator]: Completed translation [2018-11-23 06:17:25,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25 WrapperNode [2018-11-23 06:17:25,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 06:17:25,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 06:17:25,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 06:17:25,425 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 06:17:25,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25" (1/1) ... [2018-11-23 06:17:25,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25" (1/1) ... [2018-11-23 06:17:25,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 06:17:25,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 06:17:25,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 06:17:25,444 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 06:17:25,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25" (1/1) ... [2018-11-23 06:17:25,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25" (1/1) ... [2018-11-23 06:17:25,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25" (1/1) ... [2018-11-23 06:17:25,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25" (1/1) ... [2018-11-23 06:17:25,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25" (1/1) ... [2018-11-23 06:17:25,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25" (1/1) ... [2018-11-23 06:17:25,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25" (1/1) ... [2018-11-23 06:17:25,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 06:17:25,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 06:17:25,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 06:17:25,455 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 06:17:25,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 06:17:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 06:17:25,601 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 06:17:25,602 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-23 06:17:25,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:17:25 BoogieIcfgContainer [2018-11-23 06:17:25,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 06:17:25,603 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 06:17:25,603 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 06:17:25,605 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 06:17:25,606 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 06:17:25,606 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 06:17:25" (1/3) ... [2018-11-23 06:17:25,607 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@242ebaa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 06:17:25, skipping insertion in model container [2018-11-23 06:17:25,607 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 06:17:25,607 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:17:25" (2/3) ... [2018-11-23 06:17:25,608 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@242ebaa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 06:17:25, skipping insertion in model container [2018-11-23 06:17:25,608 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 06:17:25,608 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:17:25" (3/3) ... [2018-11-23 06:17:25,609 INFO L375 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-11-23 06:17:25,645 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 06:17:25,645 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 06:17:25,646 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 06:17:25,646 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 06:17:25,646 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 06:17:25,646 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 06:17:25,646 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 06:17:25,646 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 06:17:25,646 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 06:17:25,653 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-23 06:17:25,666 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 06:17:25,667 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 06:17:25,667 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 06:17:25,670 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 06:17:25,670 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 06:17:25,670 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 06:17:25,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-23 06:17:25,671 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 06:17:25,671 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 06:17:25,671 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 06:17:25,672 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 06:17:25,672 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 06:17:25,678 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2018-11-23 06:17:25,678 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 7#L18true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 5#L18-2true [2018-11-23 06:17:25,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:25,683 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-23 06:17:25,684 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:17:25,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:17:25,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:25,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:17:25,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:25,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:25,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-11-23 06:17:25,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:17:25,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:17:25,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:25,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:17:25,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:25,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:25,746 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-23 06:17:25,746 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:17:25,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:17:25,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:25,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:17:25,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:25,798 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:17:25,799 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:17:25,799 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:17:25,800 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:17:25,800 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 06:17:25,800 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:17:25,800 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:17:25,800 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:17:25,800 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 06:17:25,800 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:17:25,801 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:17:25,819 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 06:17:25,838 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 06:17:25,841 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 06:17:25,844 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 06:17:25,847 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 06:17:25,948 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:17:25,948 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:25,957 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:17:25,957 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:25,981 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 06:17:25,981 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:17:25,997 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 06:17:25,998 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:17:25,998 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:17:25,999 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:17:25,999 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:17:25,999 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 06:17:25,999 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:17:25,999 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:17:25,999 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:17:25,999 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 06:17:25,999 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:17:25,999 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:17:26,000 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 06:17:26,008 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 06:17:26,010 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 06:17:26,012 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 06:17:26,015 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 06:17:26,077 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:17:26,081 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 06:17:26,083 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 06:17:26,084 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:17:26,084 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:17:26,084 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:17:26,084 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:17:26,084 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:17:26,086 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:17:26,086 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:17:26,092 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 06:17:26,096 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 06:17:26,096 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 06:17:26,098 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 06:17:26,098 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 06:17:26,099 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 06:17:26,099 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-23 06:17:26,100 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 06:17:26,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:17:26,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:17:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:17:26,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:17:26,137 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 06:17:26,146 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 06:17:26,147 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-11-23 06:17:26,182 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 7 states. [2018-11-23 06:17:26,182 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 06:17:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 06:17:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2018-11-23 06:17:26,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-23 06:17:26,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:17:26,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-23 06:17:26,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:17:26,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-23 06:17:26,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:17:26,187 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-11-23 06:17:26,188 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 06:17:26,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2018-11-23 06:17:26,191 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-23 06:17:26,191 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-23 06:17:26,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-11-23 06:17:26,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 06:17:26,192 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-23 06:17:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-11-23 06:17:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-11-23 06:17:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 06:17:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-23 06:17:26,208 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 06:17:26,208 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 06:17:26,208 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 06:17:26,208 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-23 06:17:26,208 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 06:17:26,208 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 06:17:26,209 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 06:17:26,209 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 06:17:26,209 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 06:17:26,209 INFO L794 eck$LassoCheckResult]: Stem: 71#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 72#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2018-11-23 06:17:26,209 INFO L796 eck$LassoCheckResult]: Loop: 74#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 73#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2018-11-23 06:17:26,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:26,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-23 06:17:26,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:17:26,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:17:26,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:17:26,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:26,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2018-11-23 06:17:26,213 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:17:26,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:17:26,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:17:26,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:26,219 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2018-11-23 06:17:26,219 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:17:26,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:17:26,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:17:26,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,244 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:17:26,244 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:17:26,244 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:17:26,244 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:17:26,244 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 06:17:26,244 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:17:26,244 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:17:26,244 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:17:26,244 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 06:17:26,245 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:17:26,245 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:17:26,246 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 06:17:26,248 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 06:17:26,252 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 06:17:26,254 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 06:17:26,257 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 06:17:26,287 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:17:26,287 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:26,293 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:17:26,293 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:17:26,318 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:17:26,318 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_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:26,321 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:17:26,321 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:17:26,336 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:17:26,336 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_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:26,339 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:17:26,339 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:17:26,354 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:17:26,354 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:26,356 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:17:26,357 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:26,373 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 06:17:26,373 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:17:26,422 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 06:17:26,423 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:17:26,423 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:17:26,424 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:17:26,424 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:17:26,424 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 06:17:26,424 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:17:26,424 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:17:26,424 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:17:26,424 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 06:17:26,424 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:17:26,424 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:17:26,425 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 06:17:26,427 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 06:17:26,429 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 06:17:26,430 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 06:17:26,434 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 06:17:26,469 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:17:26,469 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 06:17:26,469 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 06:17:26,470 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:17:26,470 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:17:26,470 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:17:26,470 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:17:26,472 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 06:17:26,472 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 06:17:26,474 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:17:26,474 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 06:17:26,475 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:17:26,475 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:17:26,475 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:17:26,475 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:17:26,475 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:17:26,476 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:17:26,476 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:17:26,477 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:17:26,477 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 06:17:26,477 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:17:26,478 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:17:26,478 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:17:26,478 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:17:26,479 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 06:17:26,480 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 06:17:26,485 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:17:26,486 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 06:17:26,486 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:17:26,486 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:17:26,486 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:17:26,486 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:17:26,487 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:17:26,487 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:17:26,487 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:17:26,491 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 06:17:26,493 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 06:17:26,493 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 06:17:26,494 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 06:17:26,494 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 06:17:26,494 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 06:17:26,494 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 06:17:26,495 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 06:17:26,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:17:26,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:17:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:17:26,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:17:26,541 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 06:17:26,542 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 06:17:26,542 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-23 06:17:26,558 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 19 transitions. Complement of second has 5 states. [2018-11-23 06:17:26,558 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 06:17:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 06:17:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-23 06:17:26,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-23 06:17:26,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:17:26,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 06:17:26,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:17:26,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-23 06:17:26,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:17:26,560 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2018-11-23 06:17:26,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 06:17:26,561 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 9 states and 12 transitions. [2018-11-23 06:17:26,561 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-23 06:17:26,562 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-23 06:17:26,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2018-11-23 06:17:26,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 06:17:26,562 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-11-23 06:17:26,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2018-11-23 06:17:26,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2018-11-23 06:17:26,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 06:17:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-11-23 06:17:26,563 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-23 06:17:26,563 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-23 06:17:26,563 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 06:17:26,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-11-23 06:17:26,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 06:17:26,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 06:17:26,564 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 06:17:26,564 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2018-11-23 06:17:26,564 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 06:17:26,565 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 125#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 126#L18 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 131#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2018-11-23 06:17:26,565 INFO L796 eck$LassoCheckResult]: Loop: 129#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 130#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2018-11-23 06:17:26,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:26,565 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2018-11-23 06:17:26,565 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:17:26,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:17:26,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:17:26,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:26,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2018-11-23 06:17:26,572 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:17:26,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:17:26,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,573 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:17:26,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:26,577 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 1 times [2018-11-23 06:17:26,577 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:17:26,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:17:26,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:17:26,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:17:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:17:26,602 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:17:26,602 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:17:26,602 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:17:26,602 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:17:26,602 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 06:17:26,602 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:17:26,602 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:17:26,602 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:17:26,602 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 06:17:26,602 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:17:26,602 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:17:26,603 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 06:17:26,605 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 06:17:26,607 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 06:17:26,609 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 06:17:26,612 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 06:17:26,644 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:17:26,644 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:26,646 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:17:26,646 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:17:26,648 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:17:26,648 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:26,663 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:17:26,663 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:17:26,677 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:17:26,677 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:26,680 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:17:26,680 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:17:26,702 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:17:26,702 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_41153c85-1765-4b26-89cb-5ad897a804a1/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 06:17:26,704 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:17:26,704 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41153c85-1765-4b26-89cb-5ad897a804a1/bin-2019/uautomizer/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:17:26,720 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 06:17:26,720 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:17:26,778 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 06:17:26,779 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:17:26,779 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:17:26,780 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:17:26,780 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:17:26,780 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 06:17:26,780 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:17:26,780 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:17:26,780 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:17:26,780 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 06:17:26,780 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:17:26,780 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:17:26,781 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 06:17:26,783 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 06:17:26,784 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 06:17:26,788 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 06:17:26,791 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 06:17:26,825 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:17:26,825 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 06:17:26,825 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 06:17:26,826 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:17:26,826 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:17:26,826 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:17:26,826 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:17:26,826 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:17:26,826 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:17:26,827 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:17:26,828 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:17:26,828 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 06:17:26,828 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:17:26,828 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:17:26,828 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:17:26,828 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:17:26,829 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:17:26,829 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:17:26,829 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:17:26,829 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:17:26,830 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 06:17:26,830 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:17:26,830 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:17:26,830 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:17:26,830 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:17:26,831 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 06:17:26,831 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 06:17:26,834 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:17:26,834 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 06:17:26,834 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:17:26,835 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:17:26,835 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:17:26,835 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:17:26,835 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:17:26,835 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:17:26,835 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:17:26,838 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 06:17:26,841 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 06:17:26,841 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 06:17:26,841 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 06:17:26,841 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 06:17:26,841 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 06:17:26,841 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 06:17:26,842 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 06:17:26,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:17:26,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:17:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:17:26,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:17:26,869 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 06:17:26,869 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 06:17:26,870 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-23 06:17:26,880 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2018-11-23 06:17:26,881 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 06:17:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 06:17:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-23 06:17:26,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 06:17:26,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:17:26,882 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 06:17:26,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:17:26,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:17:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:17:26,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:17:26,920 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 06:17:26,920 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 06:17:26,920 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-23 06:17:26,933 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2018-11-23 06:17:26,933 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 06:17:26,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 06:17:26,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-23 06:17:26,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 06:17:26,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:17:26,934 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 06:17:26,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:17:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:17:26,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:17:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:17:26,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:17:26,972 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 06:17:26,973 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 06:17:26,973 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-23 06:17:26,986 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 4 states. [2018-11-23 06:17:26,987 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 06:17:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 06:17:26,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-23 06:17:26,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 06:17:26,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:17:26,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-23 06:17:26,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:17:26,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-23 06:17:26,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:17:26,988 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2018-11-23 06:17:26,989 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 06:17:26,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2018-11-23 06:17:26,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 06:17:26,989 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 06:17:26,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 06:17:26,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 06:17:26,990 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 06:17:26,990 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 06:17:26,990 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 06:17:26,990 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 06:17:26,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 06:17:26,990 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 06:17:26,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 06:17:26,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 06:17:26 BoogieIcfgContainer [2018-11-23 06:17:26,994 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 06:17:26,994 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 06:17:26,994 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 06:17:26,994 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 06:17:26,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:17:25" (3/4) ... [2018-11-23 06:17:26,997 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 06:17:26,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 06:17:26,998 INFO L168 Benchmark]: Toolchain (without parser) took 1708.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 961.9 MB in the beginning and 899.1 MB in the end (delta: 62.9 MB). Peak memory consumption was 190.3 MB. Max. memory is 11.5 GB. [2018-11-23 06:17:26,999 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:17:26,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.06 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 06:17:27,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.90 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 06:17:27,000 INFO L168 Benchmark]: Boogie Preprocessor took 10.65 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:17:27,000 INFO L168 Benchmark]: RCFGBuilder took 147.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -167.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 06:17:27,001 INFO L168 Benchmark]: BuchiAutomizer took 1391.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 899.1 MB in the end (delta: 214.1 MB). Peak memory consumption was 214.1 MB. Max. memory is 11.5 GB. [2018-11-23 06:17:27,001 INFO L168 Benchmark]: Witness Printer took 2.96 ms. Allocated memory is still 1.2 GB. Free memory is still 899.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:17:27,004 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 134.06 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.90 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.65 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 147.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -167.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1391.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 899.1 MB in the end (delta: 214.1 MB). Peak memory consumption was 214.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.96 ms. Allocated memory is still 1.2 GB. Free memory is still 899.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 10 SDs, 0 SdLazy, 32 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 5ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...