./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/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 da7ccbcfff0bcaf24fe1bd516f01da1d9e0ab2a4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 05:53:40,019 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:53:40,020 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:53:40,028 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:53:40,028 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:53:40,028 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:53:40,029 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:53:40,030 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:53:40,031 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:53:40,032 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:53:40,033 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:53:40,033 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:53:40,033 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:53:40,034 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:53:40,035 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:53:40,035 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:53:40,036 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:53:40,037 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:53:40,038 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:53:40,039 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:53:40,039 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:53:40,040 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:53:40,042 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:53:40,042 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:53:40,043 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:53:40,043 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:53:40,044 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:53:40,044 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:53:40,045 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:53:40,046 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:53:40,046 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:53:40,047 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:53:40,047 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:53:40,047 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:53:40,048 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:53:40,048 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:53:40,048 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 05:53:40,059 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:53:40,060 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:53:40,060 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:53:40,061 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:53:40,061 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 05:53:40,061 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 05:53:40,061 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 05:53:40,061 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 05:53:40,061 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 05:53:40,061 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 05:53:40,062 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 05:53:40,062 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:53:40,062 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 05:53:40,062 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:53:40,063 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:53:40,063 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 05:53:40,063 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 05:53:40,063 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 05:53:40,063 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:53:40,063 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 05:53:40,064 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 05:53:40,064 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:53:40,064 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:53:40,064 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 05:53:40,064 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:53:40,064 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 05:53:40,064 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 05:53:40,065 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 05:53:40,065 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_59793bbe-823e-493b-b412-bdee49267250/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 -> da7ccbcfff0bcaf24fe1bd516f01da1d9e0ab2a4 [2018-11-10 05:53:40,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:53:40,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:53:40,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:53:40,101 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:53:40,101 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:53:40,102 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c [2018-11-10 05:53:40,143 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/data/a2418e04a/2cd635d34f15478285dc85fc938b8e2c/FLAG94c0ec8f2 [2018-11-10 05:53:40,529 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:53:40,530 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/sv-benchmarks/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c [2018-11-10 05:53:40,533 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/data/a2418e04a/2cd635d34f15478285dc85fc938b8e2c/FLAG94c0ec8f2 [2018-11-10 05:53:40,543 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/data/a2418e04a/2cd635d34f15478285dc85fc938b8e2c [2018-11-10 05:53:40,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:53:40,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 05:53:40,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:53:40,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:53:40,548 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:53:40,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:53:40" (1/1) ... [2018-11-10 05:53:40,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4541c043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40, skipping insertion in model container [2018-11-10 05:53:40,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:53:40" (1/1) ... [2018-11-10 05:53:40,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:53:40,566 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:53:40,652 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:53:40,654 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:53:40,662 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:53:40,669 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:53:40,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40 WrapperNode [2018-11-10 05:53:40,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:53:40,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 05:53:40,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 05:53:40,670 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 05:53:40,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40" (1/1) ... [2018-11-10 05:53:40,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40" (1/1) ... [2018-11-10 05:53:40,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 05:53:40,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:53:40,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:53:40,689 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:53:40,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40" (1/1) ... [2018-11-10 05:53:40,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40" (1/1) ... [2018-11-10 05:53:40,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40" (1/1) ... [2018-11-10 05:53:40,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40" (1/1) ... [2018-11-10 05:53:40,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40" (1/1) ... [2018-11-10 05:53:40,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40" (1/1) ... [2018-11-10 05:53:40,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40" (1/1) ... [2018-11-10 05:53:40,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:53:40,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:53:40,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:53:40,698 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:53:40,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/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 [2018-11-10 05:53:40,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:53:40,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:53:40,843 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:53:40,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:53:40 BoogieIcfgContainer [2018-11-10 05:53:40,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:53:40,844 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 05:53:40,844 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 05:53:40,846 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 05:53:40,847 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 05:53:40,847 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 05:53:40" (1/3) ... [2018-11-10 05:53:40,848 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d1d3917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 05:53:40, skipping insertion in model container [2018-11-10 05:53:40,848 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 05:53:40,848 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:53:40" (2/3) ... [2018-11-10 05:53:40,848 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d1d3917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 05:53:40, skipping insertion in model container [2018-11-10 05:53:40,848 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 05:53:40,848 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:53:40" (3/3) ... [2018-11-10 05:53:40,850 INFO L375 chiAutomizerObserver]: Analyzing ICFG c.01_assume_true-termination_true-no-overflow.c [2018-11-10 05:53:40,885 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:53:40,885 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 05:53:40,885 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 05:53:40,885 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 05:53:40,885 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:53:40,886 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:53:40,886 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 05:53:40,886 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:53:40,886 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 05:53:40,893 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-10 05:53:40,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:53:40,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:53:40,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:53:40,909 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 05:53:40,909 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 05:53:40,909 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 05:53:40,909 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-10 05:53:40,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:53:40,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:53:40,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:53:40,910 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 05:53:40,910 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 05:53:40,917 INFO L793 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L9-3true [2018-11-10 05:53:40,917 INFO L795 eck$LassoCheckResult]: Loop: 8#L9-3true assume true; 11#L9-1true assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 12#L11-3true assume !true; 9#L11-4true main_~x~0 := main_~x~0 - 1; 8#L9-3true [2018-11-10 05:53:40,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:40,922 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-10 05:53:40,924 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:53:40,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:53:40,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:40,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:53:40,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:40,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:40,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2018-11-10 05:53:40,980 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:53:40,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:53:40,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:40,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:53:40,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:53:41,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:53:41,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 05:53:41,004 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-11-10 05:53:41,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 05:53:41,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 05:53:41,018 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-11-10 05:53:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:53:41,024 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-10 05:53:41,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 05:53:41,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-10 05:53:41,026 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:53:41,028 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-10 05:53:41,028 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-10 05:53:41,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-10 05:53:41,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-10 05:53:41,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 05:53:41,029 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-10 05:53:41,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-10 05:53:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-10 05:53:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-10 05:53:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-11-10 05:53:41,045 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-10 05:53:41,045 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-10 05:53:41,045 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 05:53:41,045 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-11-10 05:53:41,046 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:53:41,046 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:53:41,046 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:53:41,046 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 05:53:41,046 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 05:53:41,047 INFO L793 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 30#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 31#L9-3 [2018-11-10 05:53:41,047 INFO L795 eck$LassoCheckResult]: Loop: 31#L9-3 assume true; 36#L9-1 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 34#L11-3 assume true; 32#L11-1 assume !((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824); 33#L11-4 main_~x~0 := main_~x~0 - 1; 31#L9-3 [2018-11-10 05:53:41,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:41,047 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-10 05:53:41,047 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:53:41,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:53:41,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:53:41,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:41,051 INFO L82 PathProgramCache]: Analyzing trace with hash 34543791, now seen corresponding path program 1 times [2018-11-10 05:53:41,052 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:53:41,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:53:41,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:53:41,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:41,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1805983277, now seen corresponding path program 1 times [2018-11-10 05:53:41,065 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:53:41,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:53:41,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:53:41,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,130 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:53:41,130 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:53:41,130 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:53:41,130 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:53:41,131 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 05:53:41,131 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:53:41,131 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:53:41,131 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:53:41,131 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 05:53:41,131 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:53:41,131 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:53:41,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,232 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:53:41,232 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/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 [2018-11-10 05:53:41,235 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:53:41,235 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:53:41,255 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:53:41,255 INFO L446 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_59793bbe-823e-493b-b412-bdee49267250/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 [2018-11-10 05:53:41,257 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:53:41,257 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:53:41,273 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:53:41,273 INFO L446 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_59793bbe-823e-493b-b412-bdee49267250/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 [2018-11-10 05:53:41,275 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:53:41,275 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/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 [2018-11-10 05:53:41,293 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 05:53:41,293 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:53:41,312 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 05:53:41,313 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:53:41,313 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:53:41,313 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:53:41,313 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:53:41,313 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 05:53:41,313 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:53:41,313 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:53:41,313 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:53:41,314 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 05:53:41,314 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:53:41,314 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:53:41,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,378 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:53:41,383 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 05:53:41,384 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 [2018-11-10 05:53:41,385 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:53:41,386 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:53:41,386 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:53:41,386 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:53:41,389 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 05:53:41,389 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 05:53:41,395 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:53:41,395 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 [2018-11-10 05:53:41,396 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:53:41,396 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:53:41,396 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:53:41,396 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:53:41,398 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 05:53:41,398 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 05:53:41,404 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:53:41,404 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 [2018-11-10 05:53:41,405 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:53:41,405 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:53:41,406 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:53:41,406 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:53:41,406 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:53:41,407 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:53:41,407 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:53:41,414 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 05:53:41,419 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 05:53:41,419 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 05:53:41,421 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 05:53:41,421 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 05:53:41,421 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 05:53:41,421 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-10 05:53:41,422 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 05:53:41,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:41,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:53:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:41,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:53:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:53:41,499 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 05:53:41,500 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-10 05:53:41,534 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 12 states and 15 transitions. Complement of second has 6 states. [2018-11-10 05:53:41,535 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 [2018-11-10 05:53:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 05:53:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-10 05:53:41,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 5 letters. [2018-11-10 05:53:41,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:53:41,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 5 letters. [2018-11-10 05:53:41,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:53:41,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 10 letters. [2018-11-10 05:53:41,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:53:41,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2018-11-10 05:53:41,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-10 05:53:41,540 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 11 states and 14 transitions. [2018-11-10 05:53:41,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-10 05:53:41,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-10 05:53:41,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-11-10 05:53:41,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 05:53:41,540 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-10 05:53:41,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-11-10 05:53:41,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-10 05:53:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-10 05:53:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-11-10 05:53:41,542 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-10 05:53:41,542 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-10 05:53:41,542 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 05:53:41,542 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-11-10 05:53:41,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-10 05:53:41,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:53:41,543 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:53:41,543 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-10 05:53:41,543 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-10 05:53:41,543 INFO L793 eck$LassoCheckResult]: Stem: 100#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 94#L9-3 assume true; 101#L9-1 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 96#L11-3 [2018-11-10 05:53:41,543 INFO L795 eck$LassoCheckResult]: Loop: 96#L11-3 assume true; 95#L11-1 assume !!((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 96#L11-3 [2018-11-10 05:53:41,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:41,544 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-11-10 05:53:41,544 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:53:41,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:53:41,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:53:41,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:41,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 1 times [2018-11-10 05:53:41,550 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:53:41,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:53:41,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:53:41,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:41,556 INFO L82 PathProgramCache]: Analyzing trace with hash 889541519, now seen corresponding path program 1 times [2018-11-10 05:53:41,556 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:53:41,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:53:41,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:53:41,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,576 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:53:41,576 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:53:41,576 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:53:41,576 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:53:41,576 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 05:53:41,577 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:53:41,577 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:53:41,577 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:53:41,577 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 05:53:41,577 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:53:41,577 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:53:41,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,627 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:53:41,628 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/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 [2018-11-10 05:53:41,629 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:53:41,629 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:53:41,645 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:53:41,645 INFO L446 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_59793bbe-823e-493b-b412-bdee49267250/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 [2018-11-10 05:53:41,650 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:53:41,651 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:53:41,667 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:53:41,667 INFO L446 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_59793bbe-823e-493b-b412-bdee49267250/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 [2018-11-10 05:53:41,669 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:53:41,669 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/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 [2018-11-10 05:53:41,691 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 05:53:41,692 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:53:41,710 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 05:53:41,711 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:53:41,711 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:53:41,711 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:53:41,711 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:53:41,711 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 05:53:41,711 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:53:41,711 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:53:41,711 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:53:41,712 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 05:53:41,712 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:53:41,712 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:53:41,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,755 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:53:41,755 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 05:53:41,755 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 [2018-11-10 05:53:41,756 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:53:41,756 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:53:41,756 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:53:41,756 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:53:41,757 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 05:53:41,757 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 05:53:41,760 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:53:41,761 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 [2018-11-10 05:53:41,761 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:53:41,761 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:53:41,761 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:53:41,763 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:53:41,763 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:53:41,764 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:53:41,764 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:53:41,768 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 05:53:41,772 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 05:53:41,772 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 05:53:41,772 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 05:53:41,772 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 05:53:41,772 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 05:53:41,773 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [] [2018-11-10 05:53:41,773 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 05:53:41,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:41,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:53:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:41,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:53:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:53:41,799 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 [2018-11-10 05:53:41,799 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-10 05:53:41,807 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 28 states and 34 transitions. Complement of second has 5 states. [2018-11-10 05:53:41,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 05:53:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 05:53:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-10 05:53:41,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-10 05:53:41,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:53:41,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-10 05:53:41,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:53:41,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-10 05:53:41,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:53:41,808 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 34 transitions. [2018-11-10 05:53:41,809 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-10 05:53:41,810 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 19 states and 23 transitions. [2018-11-10 05:53:41,810 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-10 05:53:41,810 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-10 05:53:41,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2018-11-10 05:53:41,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 05:53:41,810 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-11-10 05:53:41,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2018-11-10 05:53:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-11-10 05:53:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-10 05:53:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-11-10 05:53:41,813 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-10 05:53:41,813 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-10 05:53:41,814 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 05:53:41,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-11-10 05:53:41,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-10 05:53:41,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:53:41,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:53:41,815 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-10 05:53:41,815 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-10 05:53:41,815 INFO L793 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 170#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 171#L9-3 assume true; 177#L9-1 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 175#L11-3 assume true; 184#L11-1 assume !((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824); 181#L11-4 main_~x~0 := main_~x~0 - 1; 178#L9-3 assume true; 179#L9-1 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 173#L11-3 [2018-11-10 05:53:41,815 INFO L795 eck$LassoCheckResult]: Loop: 173#L11-3 assume true; 172#L11-1 assume !!((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 173#L11-3 [2018-11-10 05:53:41,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:41,815 INFO L82 PathProgramCache]: Analyzing trace with hash 383141811, now seen corresponding path program 2 times [2018-11-10 05:53:41,815 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:53:41,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:53:41,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:53:41,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:41,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 2 times [2018-11-10 05:53:41,822 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:53:41,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:53:41,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:53:41,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:53:41,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:41,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1167906567, now seen corresponding path program 1 times [2018-11-10 05:53:41,827 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:53:41,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:53:41,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:53:41,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:53:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:53:41,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:53:41,885 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:53:41,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:53:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:41,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:53:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:53:41,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:53:41,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-11-10 05:53:41,988 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:53:41,989 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:53:41,989 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:53:41,989 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:53:41,989 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 05:53:41,989 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:53:41,989 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:53:41,989 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:53:41,989 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 05:53:41,989 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:53:41,990 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:53:41,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:41,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:42,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:42,031 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:53:42,031 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:53:42,033 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:53:42,034 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:53:42,050 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:53:42,050 INFO L446 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_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:53:42,052 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:53:42,052 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59793bbe-823e-493b-b412-bdee49267250/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:53:42,070 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 05:53:42,070 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:53:42,089 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 05:53:42,090 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:53:42,090 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:53:42,090 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:53:42,090 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:53:42,090 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 05:53:42,090 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:53:42,090 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:53:42,091 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:53:42,091 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 05:53:42,091 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:53:42,091 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:53:42,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:42,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:42,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:53:42,127 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:53:42,127 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 05:53:42,128 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 [2018-11-10 05:53:42,128 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:53:42,128 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:53:42,128 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:53:42,128 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:53:42,129 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 05:53:42,129 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 05:53:42,132 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:53:42,132 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 [2018-11-10 05:53:42,132 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:53:42,133 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:53:42,133 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:53:42,133 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:53:42,133 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:53:42,133 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:53:42,133 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:53:42,139 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 05:53:42,142 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 05:53:42,142 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 05:53:42,143 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 05:53:42,143 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 05:53:42,143 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 05:53:42,143 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [] [2018-11-10 05:53:42,143 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 05:53:42,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:42,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:53:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:42,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:53:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:53:42,162 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 [2018-11-10 05:53:42,162 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-10 05:53:42,169 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 5 states. [2018-11-10 05:53:42,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 05:53:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 05:53:42,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-10 05:53:42,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2018-11-10 05:53:42,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:53:42,170 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 05:53:42,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:42,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:53:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:42,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:53:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:53:42,188 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 05:53:42,188 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-10 05:53:42,196 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 5 states. [2018-11-10 05:53:42,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 05:53:42,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 05:53:42,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-10 05:53:42,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2018-11-10 05:53:42,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:53:42,198 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 05:53:42,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:53:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:42,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:53:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:53:42,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:53:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:53:42,212 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 05:53:42,212 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-10 05:53:42,219 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 24 states and 29 transitions. Complement of second has 4 states. [2018-11-10 05:53:42,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 05:53:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 05:53:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-11-10 05:53:42,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 2 letters. [2018-11-10 05:53:42,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:53:42,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 11 letters. Loop has 2 letters. [2018-11-10 05:53:42,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:53:42,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-10 05:53:42,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:53:42,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 29 transitions. [2018-11-10 05:53:42,221 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 05:53:42,221 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2018-11-10 05:53:42,222 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 05:53:42,222 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 05:53:42,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 05:53:42,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 05:53:42,222 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:53:42,222 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:53:42,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 05:53:42,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-10 05:53:42,222 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 10 states. [2018-11-10 05:53:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:53:42,222 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-10 05:53:42,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 05:53:42,223 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-10 05:53:42,223 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 05:53:42,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 05:53:42,223 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 05:53:42,223 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 05:53:42,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 05:53:42,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 05:53:42,223 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:53:42,223 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:53:42,223 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:53:42,223 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 05:53:42,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 05:53:42,223 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 05:53:42,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 05:53:42,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 05:53:42 BoogieIcfgContainer [2018-11-10 05:53:42,227 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 05:53:42,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:53:42,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:53:42,228 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:53:42,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:53:40" (3/4) ... [2018-11-10 05:53:42,230 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 05:53:42,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:53:42,231 INFO L168 Benchmark]: Toolchain (without parser) took 1685.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 958.1 MB in the beginning and 930.0 MB in the end (delta: 28.0 MB). Peak memory consumption was 195.8 MB. Max. memory is 11.5 GB. [2018-11-10 05:53:42,232 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-11-10 05:53:42,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 123.49 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:53:42,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.62 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:53:42,233 INFO L168 Benchmark]: Boogie Preprocessor took 9.37 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:53:42,233 INFO L168 Benchmark]: RCFGBuilder took 145.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 944.6 MB in the beginning and 1.2 GB in the end (delta: -212.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 05:53:42,234 INFO L168 Benchmark]: BuchiAutomizer took 1383.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 930.0 MB in the end (delta: 227.4 MB). Peak memory consumption was 227.4 MB. Max. memory is 11.5 GB. [2018-11-10 05:53:42,234 INFO L168 Benchmark]: Witness Printer took 2.86 ms. Allocated memory is still 1.2 GB. Free memory is still 930.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:53:42,236 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 123.49 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.62 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.37 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 145.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 944.6 MB in the beginning and 1.2 GB in the end (delta: -212.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1383.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 930.0 MB in the end (delta: 227.4 MB). Peak memory consumption was 227.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.86 ms. Allocated memory is still 1.2 GB. Free memory is still 930.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. One deterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 48 SDtfs, 38 SDslu, 12 SDs, 0 SdLazy, 29 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf98 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf94 smp100 dnf100 smp100 tf108 neg100 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...