./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 e334e85dd18553afecc96b27cf49a003304cbca8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 01:19:15,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:19:15,765 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:19:15,771 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:19:15,771 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:19:15,772 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:19:15,772 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:19:15,773 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:19:15,774 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:19:15,774 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:19:15,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:19:15,775 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:19:15,775 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:19:15,776 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:19:15,776 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:19:15,777 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:19:15,777 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:19:15,778 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:19:15,779 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:19:15,779 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:19:15,780 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:19:15,781 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:19:15,782 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:19:15,782 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:19:15,782 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:19:15,782 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:19:15,783 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:19:15,783 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:19:15,783 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:19:15,784 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:19:15,784 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:19:15,784 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:19:15,784 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:19:15,784 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:19:15,785 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:19:15,785 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:19:15,785 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-09 01:19:15,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:19:15,793 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:19:15,793 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 01:19:15,793 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 01:19:15,794 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 01:19:15,794 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-09 01:19:15,794 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-09 01:19:15,794 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-09 01:19:15,794 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-09 01:19:15,794 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-09 01:19:15,794 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-09 01:19:15,794 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:19:15,794 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 01:19:15,794 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:19:15,795 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:19:15,795 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-09 01:19:15,795 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-09 01:19:15,795 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-09 01:19:15,795 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:19:15,795 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-09 01:19:15,795 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 01:19:15,795 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-09 01:19:15,795 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:19:15,795 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:19:15,796 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-09 01:19:15,796 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:19:15,796 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 01:19:15,796 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-09 01:19:15,796 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-09 01:19:15,796 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_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 -> e334e85dd18553afecc96b27cf49a003304cbca8 [2018-12-09 01:19:15,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:19:15,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:19:15,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:19:15,822 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:19:15,822 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:19:15,822 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-12-09 01:19:15,856 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/data/b7851376f/6bc5b9f0db6849779b2e2becdbfc17a1/FLAG390ff0d7f [2018-12-09 01:19:16,265 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:19:16,265 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-12-09 01:19:16,269 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/data/b7851376f/6bc5b9f0db6849779b2e2becdbfc17a1/FLAG390ff0d7f [2018-12-09 01:19:16,279 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/data/b7851376f/6bc5b9f0db6849779b2e2becdbfc17a1 [2018-12-09 01:19:16,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:19:16,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:19:16,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:19:16,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:19:16,285 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:19:16,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:19:16" (1/1) ... [2018-12-09 01:19:16,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42aa496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16, skipping insertion in model container [2018-12-09 01:19:16,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:19:16" (1/1) ... [2018-12-09 01:19:16,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:19:16,301 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:19:16,391 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:19:16,394 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:19:16,402 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:19:16,410 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:19:16,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16 WrapperNode [2018-12-09 01:19:16,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:19:16,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:19:16,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:19:16,411 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:19:16,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16" (1/1) ... [2018-12-09 01:19:16,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16" (1/1) ... [2018-12-09 01:19:16,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:19:16,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:19:16,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:19:16,428 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:19:16,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16" (1/1) ... [2018-12-09 01:19:16,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16" (1/1) ... [2018-12-09 01:19:16,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16" (1/1) ... [2018-12-09 01:19:16,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16" (1/1) ... [2018-12-09 01:19:16,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16" (1/1) ... [2018-12-09 01:19:16,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16" (1/1) ... [2018-12-09 01:19:16,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16" (1/1) ... [2018-12-09 01:19:16,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:19:16,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:19:16,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:19:16,438 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:19:16,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:16,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:19:16,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:19:16,578 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:19:16,578 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-09 01:19:16,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:19:16 BoogieIcfgContainer [2018-12-09 01:19:16,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:19:16,579 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-09 01:19:16,579 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-09 01:19:16,581 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-09 01:19:16,582 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 01:19:16,582 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.12 01:19:16" (1/3) ... [2018-12-09 01:19:16,582 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21124a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 01:19:16, skipping insertion in model container [2018-12-09 01:19:16,582 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 01:19:16,583 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:19:16" (2/3) ... [2018-12-09 01:19:16,583 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21124a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 01:19:16, skipping insertion in model container [2018-12-09 01:19:16,583 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 01:19:16,583 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:19:16" (3/3) ... [2018-12-09 01:19:16,584 INFO L375 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-12-09 01:19:16,615 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 01:19:16,616 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-09 01:19:16,616 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-09 01:19:16,616 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-09 01:19:16,616 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:19:16,616 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:19:16,616 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-09 01:19:16,616 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:19:16,616 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-09 01:19:16,624 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-09 01:19:16,636 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 01:19:16,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 01:19:16,636 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 01:19:16,640 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 01:19:16,640 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 01:19:16,640 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-09 01:19:16,640 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-09 01:19:16,641 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 01:19:16,641 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 01:19:16,641 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 01:19:16,641 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 01:19:16,641 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 01:19:16,646 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 9#L21-2true [2018-12-09 01:19:16,646 INFO L796 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!(main_~v1~0 > 0); 3#L21true assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 9#L21-2true [2018-12-09 01:19:16,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:16,649 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-12-09 01:19:16,651 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:19:16,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:19:16,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:16,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:19:16,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:16,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:16,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2018-12-09 01:19:16,707 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:19:16,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:19:16,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:16,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:19:16,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:16,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2018-12-09 01:19:16,715 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:19:16,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:19:16,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:16,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:19:16,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:16,755 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:19:16,756 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:19:16,756 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:19:16,756 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:19:16,757 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 01:19:16,757 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:19:16,757 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:19:16,757 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:19:16,757 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-09 01:19:16,757 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:19:16,757 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:19:16,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:16,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:16,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:16,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:16,856 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:19:16,857 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:16,860 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:19:16,860 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:19:16,880 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:19:16,880 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:16,883 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:19:16,883 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:19:16,899 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:19:16,899 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:16,902 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:19:16,902 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:16,919 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:19:16,919 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:19:17,011 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 01:19:17,012 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:19:17,012 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:19:17,013 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:19:17,013 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:19:17,013 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 01:19:17,013 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:19:17,013 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:19:17,013 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:19:17,013 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-09 01:19:17,013 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:19:17,013 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:19:17,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,064 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:19:17,067 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 01:19:17,068 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 [2018-12-09 01:19:17,068 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:19:17,069 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:19:17,069 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:19:17,069 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:19:17,071 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 01:19:17,071 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 01:19:17,074 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:19:17,075 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 [2018-12-09 01:19:17,075 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:19:17,075 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:19:17,075 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:19:17,075 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:19:17,077 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 01:19:17,077 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 01:19:17,080 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:19:17,081 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 [2018-12-09 01:19:17,081 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:19:17,081 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:19:17,081 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:19:17,081 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:19:17,081 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:19:17,082 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:19:17,082 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:19:17,085 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 01:19:17,088 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 01:19:17,089 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 01:19:17,090 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 01:19:17,090 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 01:19:17,090 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 01:19:17,090 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2018-12-09 01:19:17,091 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 01:19:17,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:19:17,144 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 01:19:17,145 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-12-09 01:19:17,169 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2018-12-09 01:19:17,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 01:19:17,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 01:19:17,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-12-09 01:19:17,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-09 01:19:17,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:17,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-09 01:19:17,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:17,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-09 01:19:17,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:17,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-12-09 01:19:17,176 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 01:19:17,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2018-12-09 01:19:17,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-09 01:19:17,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-12-09 01:19:17,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-12-09 01:19:17,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 01:19:17,179 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 01:19:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-12-09 01:19:17,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-12-09 01:19:17,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-09 01:19:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-12-09 01:19:17,194 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 01:19:17,194 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 01:19:17,194 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-09 01:19:17,195 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-12-09 01:19:17,195 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 01:19:17,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 01:19:17,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 01:19:17,195 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-09 01:19:17,195 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 01:19:17,195 INFO L794 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 77#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 78#L21-2 assume !!(main_~v1~0 > 0); 72#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 73#L21-2 [2018-12-09 01:19:17,195 INFO L796 eck$LassoCheckResult]: Loop: 73#L21-2 assume !!(main_~v1~0 > 0); 79#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 73#L21-2 [2018-12-09 01:19:17,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,196 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2018-12-09 01:19:17,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:19:17,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:19:17,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:19:17,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:19:17,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:19:17,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:19:17,218 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 01:19:17,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2018-12-09 01:19:17,218 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:19:17,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:19:17,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:19:17,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:17,234 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:19:17,234 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:19:17,234 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:19:17,234 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:19:17,234 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 01:19:17,234 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:19:17,234 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:19:17,234 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:19:17,235 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-09 01:19:17,235 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:19:17,235 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:19:17,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,284 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:19:17,285 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:17,286 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:19:17,286 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:19:17,304 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:19:17,305 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_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:17,307 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:19:17,307 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:17,323 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:19:17,323 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:19:17,428 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 01:19:17,429 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:19:17,429 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:19:17,429 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:19:17,429 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:19:17,429 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 01:19:17,430 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:19:17,430 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:19:17,430 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:19:17,430 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-09 01:19:17,430 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:19:17,430 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:19:17,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,467 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:19:17,468 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 01:19:17,468 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 [2018-12-09 01:19:17,468 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:19:17,469 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:19:17,469 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:19:17,469 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:19:17,470 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 01:19:17,471 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 01:19:17,474 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:19:17,475 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 [2018-12-09 01:19:17,475 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:19:17,475 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:19:17,475 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:19:17,475 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:19:17,476 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:19:17,476 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:19:17,476 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:19:17,480 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 01:19:17,484 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 01:19:17,484 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 01:19:17,485 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 01:19:17,485 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 01:19:17,485 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 01:19:17,485 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~v2~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~v2~0 Supporting invariants [] [2018-12-09 01:19:17,486 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 01:19:17,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:19:17,512 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 01:19:17,512 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-09 01:19:17,519 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2018-12-09 01:19:17,519 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 [2018-12-09 01:19:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 01:19:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-12-09 01:19:17,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-09 01:19:17,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:17,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-09 01:19:17,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:17,521 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2018-12-09 01:19:17,521 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:17,521 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2018-12-09 01:19:17,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 01:19:17,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2018-12-09 01:19:17,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-09 01:19:17,522 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-09 01:19:17,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2018-12-09 01:19:17,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 01:19:17,523 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-12-09 01:19:17,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2018-12-09 01:19:17,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-09 01:19:17,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-09 01:19:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2018-12-09 01:19:17,524 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-12-09 01:19:17,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:19:17,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:19:17,528 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 3 states. [2018-12-09 01:19:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:19:17,539 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2018-12-09 01:19:17,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:19:17,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2018-12-09 01:19:17,540 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 01:19:17,540 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 17 transitions. [2018-12-09 01:19:17,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-12-09 01:19:17,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-09 01:19:17,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-12-09 01:19:17,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 01:19:17,541 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-12-09 01:19:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-12-09 01:19:17,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-12-09 01:19:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-09 01:19:17,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-12-09 01:19:17,542 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-12-09 01:19:17,542 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-12-09 01:19:17,542 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-09 01:19:17,542 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2018-12-09 01:19:17,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 01:19:17,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 01:19:17,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 01:19:17,542 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2018-12-09 01:19:17,543 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 01:19:17,543 INFO L794 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 160#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 161#L21-2 assume !!(main_~v1~0 > 0); 157#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 158#L21-2 assume !!(main_~v1~0 > 0); 155#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 156#L21-2 assume !!(main_~v1~0 > 0); 164#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 162#L21-2 [2018-12-09 01:19:17,543 INFO L796 eck$LassoCheckResult]: Loop: 162#L21-2 assume !!(main_~v1~0 > 0); 163#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 162#L21-2 [2018-12-09 01:19:17,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,543 INFO L82 PathProgramCache]: Analyzing trace with hash -422236399, now seen corresponding path program 1 times [2018-12-09 01:19:17,543 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:19:17,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:19:17,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:19:17,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 01:19:17,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:19:17,563 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:19:17,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:19:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 01:19:17,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 01:19:17,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-12-09 01:19:17,596 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 01:19:17,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2018-12-09 01:19:17,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:19:17,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:19:17,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:19:17,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:17,609 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:19:17,609 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:19:17,609 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:19:17,609 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:19:17,609 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 01:19:17,610 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:19:17,610 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:19:17,610 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:19:17,610 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-09 01:19:17,610 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:19:17,610 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:19:17,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,655 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:19:17,656 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:17,657 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:19:17,657 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:19:17,672 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:19:17,672 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_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:17,675 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:19:17,675 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:17,700 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:19:17,700 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:19:17,793 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 01:19:17,794 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:19:17,794 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:19:17,794 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:19:17,794 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:19:17,794 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 01:19:17,794 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:19:17,794 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:19:17,794 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:19:17,795 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-09 01:19:17,795 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:19:17,795 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:19:17,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,837 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:19:17,837 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 01:19:17,837 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 [2018-12-09 01:19:17,838 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:19:17,838 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:19:17,838 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:19:17,838 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:19:17,839 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 01:19:17,839 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 01:19:17,842 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:19:17,842 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 [2018-12-09 01:19:17,842 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:19:17,842 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:19:17,843 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:19:17,843 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:19:17,843 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:19:17,843 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:19:17,843 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:19:17,846 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 01:19:17,849 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 01:19:17,849 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 01:19:17,850 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 01:19:17,850 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 01:19:17,850 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 01:19:17,850 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2018-12-09 01:19:17,850 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 01:19:17,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:19:17,868 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 01:19:17,868 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-12-09 01:19:17,874 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2018-12-09 01:19:17,874 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 [2018-12-09 01:19:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 01:19:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-12-09 01:19:17,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-09 01:19:17,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:17,875 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 01:19:17,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:19:17,893 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 01:19:17,893 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-12-09 01:19:17,897 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2018-12-09 01:19:17,897 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 [2018-12-09 01:19:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 01:19:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-12-09 01:19:17,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-09 01:19:17,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:17,898 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 01:19:17,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:17,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:19:17,913 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 01:19:17,913 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-12-09 01:19:17,918 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 4 states. [2018-12-09 01:19:17,918 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 [2018-12-09 01:19:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 01:19:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-09 01:19:17,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-09 01:19:17,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:17,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2018-12-09 01:19:17,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:17,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2018-12-09 01:19:17,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:17,920 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2018-12-09 01:19:17,920 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-09 01:19:17,921 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2018-12-09 01:19:17,921 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-09 01:19:17,921 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-09 01:19:17,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2018-12-09 01:19:17,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 01:19:17,921 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-12-09 01:19:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2018-12-09 01:19:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2018-12-09 01:19:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-09 01:19:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-12-09 01:19:17,922 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-12-09 01:19:17,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:19:17,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:19:17,923 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 5 states. [2018-12-09 01:19:17,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:19:17,929 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-09 01:19:17,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:19:17,930 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2018-12-09 01:19:17,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 01:19:17,930 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2018-12-09 01:19:17,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-09 01:19:17,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-09 01:19:17,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2018-12-09 01:19:17,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 01:19:17,931 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-12-09 01:19:17,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2018-12-09 01:19:17,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2018-12-09 01:19:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-09 01:19:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-12-09 01:19:17,932 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-12-09 01:19:17,932 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-12-09 01:19:17,932 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-09 01:19:17,932 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2018-12-09 01:19:17,932 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-09 01:19:17,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 01:19:17,933 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 01:19:17,933 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 01:19:17,933 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2018-12-09 01:19:17,933 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 373#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 369#L21-2 [2018-12-09 01:19:17,933 INFO L796 eck$LassoCheckResult]: Loop: 369#L21-2 assume !!(main_~v1~0 > 0); 370#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 371#L21-2 assume !!(main_~v1~0 > 0); 368#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 369#L21-2 [2018-12-09 01:19:17,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,933 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2018-12-09 01:19:17,934 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:19:17,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:19:17,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:19:17,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:17,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1326601, now seen corresponding path program 1 times [2018-12-09 01:19:17,938 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:19:17,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:19:17,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:19:17,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:17,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:17,943 INFO L82 PathProgramCache]: Analyzing trace with hash 920229996, now seen corresponding path program 2 times [2018-12-09 01:19:17,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:19:17,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:19:17,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:19:17,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:19:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:19:17,972 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:19:17,972 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:19:17,973 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:19:17,973 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:19:17,973 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 01:19:17,973 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:19:17,973 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:19:17,973 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:19:17,973 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-09 01:19:17,973 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:19:17,973 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:19:17,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:17,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:18,022 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:19:18,022 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/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 [2018-12-09 01:19:18,024 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:19:18,024 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:19:18,027 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:19:18,027 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:19:18,041 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:19:18,041 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:19:18,056 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:19:18,056 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:19:18,058 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:19:18,058 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da4e0a62-0784-4d18-99fc-62d12d00aa58/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:19:18,074 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:19:18,074 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:19:18,116 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 01:19:18,117 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:19:18,117 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:19:18,117 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:19:18,117 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:19:18,117 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 01:19:18,117 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:19:18,117 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:19:18,118 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:19:18,118 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-09 01:19:18,118 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:19:18,118 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:19:18,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:18,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:18,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:18,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:19:18,169 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:19:18,169 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 01:19:18,169 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 [2018-12-09 01:19:18,170 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:19:18,170 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:19:18,170 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:19:18,170 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:19:18,170 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:19:18,171 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:19:18,171 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:19:18,173 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:19:18,173 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 [2018-12-09 01:19:18,173 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:19:18,173 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:19:18,173 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:19:18,174 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:19:18,174 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:19:18,174 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:19:18,174 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:19:18,176 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 01:19:18,177 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 01:19:18,178 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 01:19:18,178 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 01:19:18,178 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 01:19:18,178 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 01:19:18,178 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v1~0) = 1*ULTIMATE.start_main_~v1~0 Supporting invariants [] [2018-12-09 01:19:18,178 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 01:19:18,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:19:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:18,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:19:18,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:19:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:19:18,210 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-09 01:19:18,210 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2018-12-09 01:19:18,221 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 13 states and 15 transitions. Complement of second has 6 states. [2018-12-09 01:19:18,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 01:19:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-09 01:19:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-12-09 01:19:18,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-09 01:19:18,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:18,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2018-12-09 01:19:18,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:18,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2018-12-09 01:19:18,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:19:18,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2018-12-09 01:19:18,222 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 01:19:18,222 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2018-12-09 01:19:18,222 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 01:19:18,222 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 01:19:18,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 01:19:18,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 01:19:18,222 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:19:18,222 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:19:18,222 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:19:18,222 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-09 01:19:18,222 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-09 01:19:18,223 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 01:19:18,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-09 01:19:18,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.12 01:19:18 BoogieIcfgContainer [2018-12-09 01:19:18,226 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-09 01:19:18,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:19:18,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:19:18,227 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:19:18,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:19:16" (3/4) ... [2018-12-09 01:19:18,229 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 01:19:18,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:19:18,230 INFO L168 Benchmark]: Toolchain (without parser) took 1948.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -130.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:19:18,230 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:19:18,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.26 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:19:18,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.10 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:19:18,231 INFO L168 Benchmark]: Boogie Preprocessor took 9.97 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 940.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:19:18,231 INFO L168 Benchmark]: RCFGBuilder took 140.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-09 01:19:18,232 INFO L168 Benchmark]: BuchiAutomizer took 1647.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-12-09 01:19:18,232 INFO L168 Benchmark]: Witness Printer took 2.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:19:18,234 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 128.26 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 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 17.10 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.97 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 940.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 140.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1647.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * v2 + m and consists of 4 locations. One deterministic module has affine ranking function m + -1 * v2 and consists of 3 locations. One deterministic module has affine ranking function v1 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * v2 + m and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 5 iterations. TraceHistogramMax:3. Analysis of lassos took 1.2s. 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 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 12 SDs, 0 SdLazy, 34 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...