./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.12_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.12_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/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 f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 15:03:12,895 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:03:12,896 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:03:12,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:03:12,903 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:03:12,904 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:03:12,905 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:03:12,906 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:03:12,907 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:03:12,907 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:03:12,908 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:03:12,908 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:03:12,909 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:03:12,910 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:03:12,910 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:03:12,911 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:03:12,911 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:03:12,913 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:03:12,914 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:03:12,915 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:03:12,915 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:03:12,916 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:03:12,918 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:03:12,918 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:03:12,918 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:03:12,918 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:03:12,919 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:03:12,919 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:03:12,920 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:03:12,921 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:03:12,921 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:03:12,921 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:03:12,922 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:03:12,922 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:03:12,922 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:03:12,923 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:03:12,923 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 15:03:12,933 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:03:12,933 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:03:12,934 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 15:03:12,934 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 15:03:12,934 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 15:03:12,934 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 15:03:12,934 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 15:03:12,934 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 15:03:12,935 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 15:03:12,935 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 15:03:12,935 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 15:03:12,935 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:03:12,935 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 15:03:12,935 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 15:03:12,935 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:03:12,935 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 15:03:12,936 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 15:03:12,936 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 15:03:12,936 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 15:03:12,936 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 15:03:12,936 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:03:12,936 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 15:03:12,936 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:03:12,936 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:03:12,937 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 15:03:12,937 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:03:12,937 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 15:03:12,937 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 15:03:12,938 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 15:03:12,938 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_d207d896-c7de-4faa-bff8-f97391ca6ea7/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 -> f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff [2018-11-23 15:03:12,959 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:03:12,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:03:12,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:03:12,971 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:03:12,971 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:03:12,971 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.12_true-termination_true-no-overflow.c [2018-11-23 15:03:13,008 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/data/571ec6520/f5e6c77413cb4d9ea8cad175a99e6aea/FLAG79e636eb1 [2018-11-23 15:03:13,422 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:03:13,423 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/sv-benchmarks/c/termination-restricted-15/b.12_true-termination_true-no-overflow.c [2018-11-23 15:03:13,426 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/data/571ec6520/f5e6c77413cb4d9ea8cad175a99e6aea/FLAG79e636eb1 [2018-11-23 15:03:13,436 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/data/571ec6520/f5e6c77413cb4d9ea8cad175a99e6aea [2018-11-23 15:03:13,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:03:13,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 15:03:13,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:03:13,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:03:13,442 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:03:13,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:13" (1/1) ... [2018-11-23 15:03:13,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c8d80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13, skipping insertion in model container [2018-11-23 15:03:13,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:13" (1/1) ... [2018-11-23 15:03:13,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:03:13,462 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:03:13,567 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:03:13,569 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:03:13,578 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:03:13,585 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:03:13,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13 WrapperNode [2018-11-23 15:03:13,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:03:13,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 15:03:13,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 15:03:13,586 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 15:03:13,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13" (1/1) ... [2018-11-23 15:03:13,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13" (1/1) ... [2018-11-23 15:03:13,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 15:03:13,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:03:13,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:03:13,604 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:03:13,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13" (1/1) ... [2018-11-23 15:03:13,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13" (1/1) ... [2018-11-23 15:03:13,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13" (1/1) ... [2018-11-23 15:03:13,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13" (1/1) ... [2018-11-23 15:03:13,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13" (1/1) ... [2018-11-23 15:03:13,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13" (1/1) ... [2018-11-23 15:03:13,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13" (1/1) ... [2018-11-23 15:03:13,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:03:13,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:03:13,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:03:13,615 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:03:13,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:03:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:03:13,766 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:03:13,766 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-23 15:03:13,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:03:13 BoogieIcfgContainer [2018-11-23 15:03:13,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:03:13,767 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 15:03:13,767 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 15:03:13,769 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 15:03:13,769 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:03:13,769 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 03:03:13" (1/3) ... [2018-11-23 15:03:13,770 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@300542c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 03:03:13, skipping insertion in model container [2018-11-23 15:03:13,770 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:03:13,771 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:13" (2/3) ... [2018-11-23 15:03:13,771 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@300542c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 03:03:13, skipping insertion in model container [2018-11-23 15:03:13,771 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:03:13,771 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:03:13" (3/3) ... [2018-11-23 15:03:13,773 INFO L375 chiAutomizerObserver]: Analyzing ICFG b.12_true-termination_true-no-overflow.c [2018-11-23 15:03:13,816 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 15:03:13,816 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 15:03:13,816 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 15:03:13,816 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 15:03:13,816 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:03:13,816 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:03:13,816 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 15:03:13,816 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:03:13,817 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 15:03:13,824 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 15:03:13,838 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:03:13,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:03:13,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:03:13,843 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 15:03:13,843 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 15:03:13,843 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 15:03:13,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 15:03:13,844 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:03:13,844 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:03:13,844 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:03:13,844 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 15:03:13,844 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 15:03:13,848 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L15-2true [2018-11-23 15:03:13,849 INFO L796 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(main_~x~0 > 0 || main_~y~0 > 0); 6#L12true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 8#L15-2true [2018-11-23 15:03:13,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:03:13,852 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-23 15:03:13,853 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:03:13,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:03:13,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:13,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:03:13,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:13,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:03:13,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-11-23 15:03:13,916 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:03:13,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:03:13,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:13,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:03:13,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:13,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:03:13,925 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-23 15:03:13,925 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:03:13,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:03:13,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:13,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:03:13,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:13,974 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:03:13,975 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:03:13,975 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:03:13,975 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:03:13,975 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:03:13,975 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:13,975 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:03:13,975 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:03:13,975 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 15:03:13,975 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:03:13,975 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:03:13,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:13,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,055 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:03:14,056 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,059 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:03:14,059 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:03:14,078 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:03:14,079 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_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,082 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:03:14,082 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:03:14,099 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:03:14,099 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_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,107 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:03:14,107 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,123 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:03:14,123 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:03:14,140 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:03:14,141 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:03:14,141 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:03:14,141 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:03:14,141 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:03:14,141 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:03:14,141 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,141 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:03:14,141 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:03:14,141 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 15:03:14,141 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:03:14,141 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:03:14,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,209 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:03:14,214 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:03:14,215 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:03:14,216 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:03:14,217 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:03:14,217 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:03:14,217 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:03:14,221 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:03:14,221 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:03:14,228 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:03:14,229 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:03:14,229 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:03:14,230 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:03:14,230 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:03:14,230 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:03:14,232 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:03:14,232 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:03:14,239 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:03:14,240 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:03:14,240 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:03:14,240 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:03:14,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:03:14,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:03:14,241 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:03:14,242 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:03:14,242 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:03:14,247 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:03:14,249 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:03:14,250 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 15:03:14,251 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:03:14,251 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:03:14,252 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:03:14,252 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-23 15:03:14,253 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:03:14,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:03:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:03:14,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:03:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:03:14,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:03:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:03:14,323 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 15:03:14,324 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-23 15:03:14,355 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2018-11-23 15:03:14,355 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 [2018-11-23 15:03:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 15:03:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-23 15:03:14,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-23 15:03:14,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:03:14,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-23 15:03:14,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:03:14,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-23 15:03:14,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:03:14,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2018-11-23 15:03:14,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:03:14,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2018-11-23 15:03:14,366 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-23 15:03:14,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-23 15:03:14,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2018-11-23 15:03:14,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:03:14,367 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2018-11-23 15:03:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2018-11-23 15:03:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-11-23 15:03:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-23 15:03:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2018-11-23 15:03:14,383 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2018-11-23 15:03:14,383 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2018-11-23 15:03:14,383 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 15:03:14,384 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2018-11-23 15:03:14,384 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:03:14,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:03:14,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:03:14,384 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 15:03:14,384 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 15:03:14,385 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 68#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2018-11-23 15:03:14,385 INFO L796 eck$LassoCheckResult]: Loop: 69#L12 assume !(main_~x~0 > 0); 63#L15 assume main_~y~0 > 0;main_~y~0 := main_~y~0 - 1; 64#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2018-11-23 15:03:14,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:03:14,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-23 15:03:14,385 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:03:14,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:03:14,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:14,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:03:14,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:14,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:03:14,390 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2018-11-23 15:03:14,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:03:14,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:03:14,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:14,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:03:14,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:14,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:03:14,397 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2018-11-23 15:03:14,397 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:03:14,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:03:14,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:14,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:03:14,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:14,432 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:03:14,432 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:03:14,432 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:03:14,432 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:03:14,432 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:03:14,432 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,432 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:03:14,432 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:03:14,433 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 15:03:14,433 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:03:14,433 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:03:14,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,505 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:03:14,505 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,515 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:03:14,515 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:03:14,540 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:03:14,540 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_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,546 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:03:14,546 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:03:14,561 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:03:14,561 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,563 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:03:14,564 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:03:14,578 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:03:14,578 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,580 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:03:14,580 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d207d896-c7de-4faa-bff8-f97391ca6ea7/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,597 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:03:14,597 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:03:14,636 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:03:14,637 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:03:14,637 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:03:14,637 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:03:14,637 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:03:14,638 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:03:14,638 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:03:14,638 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:03:14,638 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:03:14,638 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 15:03:14,638 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:03:14,638 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:03:14,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:03:14,670 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:03:14,671 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:03:14,671 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:03:14,672 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:03:14,672 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:03:14,672 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:03:14,672 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:03:14,673 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:03:14,673 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:03:14,676 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:03:14,676 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:03:14,677 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:03:14,677 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:03:14,677 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:03:14,677 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:03:14,677 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:03:14,678 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:03:14,678 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:03:14,678 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:03:14,679 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:03:14,679 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:03:14,679 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:03:14,679 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:03:14,679 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:03:14,680 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:03:14,680 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:03:14,680 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:03:14,683 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:03:14,686 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:03:14,686 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 15:03:14,687 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:03:14,687 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:03:14,687 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:03:14,687 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 15:03:14,688 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:03:14,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:03:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:03:14,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:03:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:03:14,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:03:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:03:14,734 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 [2018-11-23 15:03:14,734 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-23 15:03:14,765 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2018-11-23 15:03:14,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 15:03:14,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 15:03:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2018-11-23 15:03:14,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-23 15:03:14,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:03:14,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-23 15:03:14,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:03:14,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-23 15:03:14,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:03:14,767 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2018-11-23 15:03:14,769 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:03:14,770 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2018-11-23 15:03:14,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-23 15:03:14,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-23 15:03:14,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2018-11-23 15:03:14,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:03:14,770 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2018-11-23 15:03:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2018-11-23 15:03:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-11-23 15:03:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-23 15:03:14,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2018-11-23 15:03:14,773 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2018-11-23 15:03:14,773 INFO L608 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2018-11-23 15:03:14,774 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 15:03:14,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2018-11-23 15:03:14,774 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:03:14,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:03:14,774 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:03:14,775 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-23 15:03:14,775 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 15:03:14,775 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 153#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 163#L12 assume !(main_~x~0 > 0); 147#L15 [2018-11-23 15:03:14,775 INFO L796 eck$LassoCheckResult]: Loop: 147#L15 assume !(main_~y~0 > 0); 148#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 154#L12 assume !(main_~x~0 > 0); 147#L15 [2018-11-23 15:03:14,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:03:14,775 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-11-23 15:03:14,776 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:03:14,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:03:14,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:14,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:03:14,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:03:14,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:03:14,780 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2018-11-23 15:03:14,780 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:03:14,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:03:14,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:14,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:03:14,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:03:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:03:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:03:14,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:03:14,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 15:03:14,803 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-23 15:03:14,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 15:03:14,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:03:14,806 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-23 15:03:14,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:03:14,825 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2018-11-23 15:03:14,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 15:03:14,825 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2018-11-23 15:03:14,826 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 15:03:14,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2018-11-23 15:03:14,827 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 15:03:14,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 15:03:14,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 15:03:14,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 15:03:14,827 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:03:14,827 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:03:14,827 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:03:14,827 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 15:03:14,827 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:03:14,828 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 15:03:14,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 15:03:14,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 03:03:14 BoogieIcfgContainer [2018-11-23 15:03:14,832 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 15:03:14,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:03:14,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:03:14,833 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:03:14,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:03:13" (3/4) ... [2018-11-23 15:03:14,835 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 15:03:14,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:03:14,836 INFO L168 Benchmark]: Toolchain (without parser) took 1397.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -53.2 MB). Peak memory consumption was 130.3 MB. Max. memory is 11.5 GB. [2018-11-23 15:03:14,837 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:03:14,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.48 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:03:14,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.57 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:03:14,839 INFO L168 Benchmark]: Boogie Preprocessor took 10.38 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:03:14,839 INFO L168 Benchmark]: RCFGBuilder took 151.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -222.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 15:03:14,839 INFO L168 Benchmark]: BuchiAutomizer took 1065.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 155.8 MB). Peak memory consumption was 155.8 MB. Max. memory is 11.5 GB. [2018-11-23 15:03:14,840 INFO L168 Benchmark]: Witness Printer took 2.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:03:14,842 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.48 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.57 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.38 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 151.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -222.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1065.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 155.8 MB). Peak memory consumption was 155.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 16 SDslu, 11 SDs, 0 SdLazy, 32 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...