./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/a.10_true-termination.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_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/a.10_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/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 8d0216d6bf8bf4f618f739d27f28d08a28da9c3b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-09 22:25:39,429 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-09 22:25:39,430 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-09 22:25:39,437 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-09 22:25:39,437 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-09 22:25:39,437 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-09 22:25:39,438 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-09 22:25:39,439 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-09 22:25:39,440 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-09 22:25:39,441 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-09 22:25:39,442 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-09 22:25:39,442 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-09 22:25:39,442 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-09 22:25:39,443 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-09 22:25:39,444 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-09 22:25:39,444 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-09 22:25:39,446 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-09 22:25:39,447 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-09 22:25:39,448 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-09 22:25:39,450 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-09 22:25:39,450 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-09 22:25:39,451 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-09 22:25:39,453 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-09 22:25:39,453 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-09 22:25:39,453 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-09 22:25:39,453 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-09 22:25:39,454 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-09 22:25:39,454 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-09 22:25:39,456 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-09 22:25:39,456 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-09 22:25:39,456 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-09 22:25:39,457 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-09 22:25:39,457 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-09 22:25:39,457 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-09 22:25:39,458 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-09 22:25:39,458 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-09 22:25:39,459 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-09 22:25:39,470 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-09 22:25:39,470 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-09 22:25:39,471 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-09 22:25:39,471 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-09 22:25:39,471 INFO L133 SettingsManager]: * Use SBE=true [2018-11-09 22:25:39,471 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-09 22:25:39,471 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-09 22:25:39,472 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-09 22:25:39,472 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-09 22:25:39,472 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-09 22:25:39,472 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-09 22:25:39,472 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-09 22:25:39,472 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-09 22:25:39,472 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-09 22:25:39,472 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-09 22:25:39,472 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-09 22:25:39,475 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-09 22:25:39,475 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-09 22:25:39,475 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-09 22:25:39,475 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-09 22:25:39,475 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-09 22:25:39,476 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-09 22:25:39,476 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-09 22:25:39,476 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-09 22:25:39,476 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-09 22:25:39,476 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-09 22:25:39,476 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-09 22:25:39,477 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-09 22:25:39,477 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_b0e247a6-a222-4645-a04e-9d8734319a16/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 -> 8d0216d6bf8bf4f618f739d27f28d08a28da9c3b [2018-11-09 22:25:39,499 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-09 22:25:39,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-09 22:25:39,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-09 22:25:39,511 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-09 22:25:39,512 INFO L276 PluginConnector]: CDTParser initialized [2018-11-09 22:25:39,512 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/a.10_true-termination.c [2018-11-09 22:25:39,549 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/data/e25c7b750/3c580acf1a7b4109bdb7df9edf321367/FLAG264785893 [2018-11-09 22:25:39,847 INFO L298 CDTParser]: Found 1 translation units. [2018-11-09 22:25:39,847 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/sv-benchmarks/c/termination-restricted-15/a.10_true-termination.c [2018-11-09 22:25:39,853 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/data/e25c7b750/3c580acf1a7b4109bdb7df9edf321367/FLAG264785893 [2018-11-09 22:25:39,865 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/data/e25c7b750/3c580acf1a7b4109bdb7df9edf321367 [2018-11-09 22:25:39,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-09 22:25:39,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-09 22:25:39,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-09 22:25:39,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-09 22:25:39,873 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-09 22:25:39,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:25:39" (1/1) ... [2018-11-09 22:25:39,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c1d5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:39, skipping insertion in model container [2018-11-09 22:25:39,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:25:39" (1/1) ... [2018-11-09 22:25:39,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-09 22:25:39,900 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-09 22:25:40,019 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 22:25:40,021 INFO L189 MainTranslator]: Completed pre-run [2018-11-09 22:25:40,029 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 22:25:40,036 INFO L193 MainTranslator]: Completed translation [2018-11-09 22:25:40,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40 WrapperNode [2018-11-09 22:25:40,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-09 22:25:40,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-09 22:25:40,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-09 22:25:40,037 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-09 22:25:40,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40" (1/1) ... [2018-11-09 22:25:40,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40" (1/1) ... [2018-11-09 22:25:40,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-09 22:25:40,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-09 22:25:40,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-09 22:25:40,055 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-09 22:25:40,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40" (1/1) ... [2018-11-09 22:25:40,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40" (1/1) ... [2018-11-09 22:25:40,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40" (1/1) ... [2018-11-09 22:25:40,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40" (1/1) ... [2018-11-09 22:25:40,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40" (1/1) ... [2018-11-09 22:25:40,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40" (1/1) ... [2018-11-09 22:25:40,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40" (1/1) ... [2018-11-09 22:25:40,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-09 22:25:40,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-09 22:25:40,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-09 22:25:40,065 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-09 22:25:40,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/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 [2018-11-09 22:25:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-09 22:25:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-09 22:25:40,219 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-09 22:25:40,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:25:40 BoogieIcfgContainer [2018-11-09 22:25:40,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-09 22:25:40,220 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-09 22:25:40,220 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-09 22:25:40,223 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-09 22:25:40,224 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-09 22:25:40,224 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 10:25:39" (1/3) ... [2018-11-09 22:25:40,225 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@260b58e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 10:25:40, skipping insertion in model container [2018-11-09 22:25:40,225 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-09 22:25:40,225 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:40" (2/3) ... [2018-11-09 22:25:40,225 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@260b58e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 10:25:40, skipping insertion in model container [2018-11-09 22:25:40,225 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-09 22:25:40,225 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:25:40" (3/3) ... [2018-11-09 22:25:40,226 INFO L375 chiAutomizerObserver]: Analyzing ICFG a.10_true-termination.c [2018-11-09 22:25:40,259 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-09 22:25:40,260 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-09 22:25:40,260 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-09 22:25:40,260 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-09 22:25:40,260 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-09 22:25:40,260 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-09 22:25:40,260 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-09 22:25:40,260 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-09 22:25:40,260 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-09 22:25:40,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-09 22:25:40,281 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-09 22:25:40,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 22:25:40,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 22:25:40,285 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-09 22:25:40,286 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 22:25:40,286 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-09 22:25:40,286 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-09 22:25:40,286 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-09 22:25:40,286 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 22:25:40,286 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 22:25:40,287 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-09 22:25:40,287 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 22:25:40,291 INFO L793 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 4#L12-2true [2018-11-09 22:25:40,292 INFO L795 eck$LassoCheckResult]: Loop: 4#L12-2true assume true; 5#L11-1true assume !!!(main_~x~0 == main_~y~0); 7#L12true assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 + 1; 4#L12-2true [2018-11-09 22:25:40,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:40,296 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-09 22:25:40,297 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:40,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:40,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:40,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:25:40,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:40,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:40,354 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 1 times [2018-11-09 22:25:40,354 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:40,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:40,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:40,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:25:40,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:40,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:40,365 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-11-09 22:25:40,365 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:40,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:40,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:40,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:25:40,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:40,411 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 22:25:40,412 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 22:25:40,412 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 22:25:40,412 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 22:25:40,412 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 22:25:40,413 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:40,413 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 22:25:40,413 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 22:25:40,413 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration1_Loop [2018-11-09 22:25:40,413 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 22:25:40,413 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 22:25:40,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:40,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:40,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:40,541 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 22:25:40,541 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/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 [2018-11-09 22:25:40,554 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 22:25:40,554 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 22:25:40,575 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 22:25:40,576 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_b0e247a6-a222-4645-a04e-9d8734319a16/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 [2018-11-09 22:25:40,578 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 22:25:40,578 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 22:25:40,595 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 22:25:40,595 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_b0e247a6-a222-4645-a04e-9d8734319a16/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 [2018-11-09 22:25:40,597 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 22:25:40,597 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/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 [2018-11-09 22:25:40,625 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 22:25:40,625 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 22:25:40,796 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-09 22:25:40,797 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 22:25:40,797 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 22:25:40,797 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 22:25:40,797 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 22:25:40,797 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 22:25:40,797 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:40,798 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 22:25:40,798 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 22:25:40,798 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration1_Loop [2018-11-09 22:25:40,798 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 22:25:40,798 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 22:25:40,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:40,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:40,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:40,897 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 22:25:40,902 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 22:25:40,903 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 [2018-11-09 22:25:40,904 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 22:25:40,905 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 22:25:40,905 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 22:25:40,905 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 22:25:40,908 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-09 22:25:40,909 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-09 22:25:40,916 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 22:25:40,916 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 [2018-11-09 22:25:40,917 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 22:25:40,917 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 22:25:40,917 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 22:25:40,917 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 22:25:40,919 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-09 22:25:40,919 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-09 22:25:40,928 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 22:25:40,929 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 [2018-11-09 22:25:40,930 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 22:25:40,930 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 22:25:40,930 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 22:25:40,930 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 22:25:40,930 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 22:25:40,931 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 22:25:40,931 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 22:25:40,937 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 22:25:40,944 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-09 22:25:40,944 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-09 22:25:40,946 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 22:25:40,946 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 22:25:40,947 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 22:25:40,947 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-09 22:25:40,948 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 22:25:40,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:40,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:41,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:25:41,015 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 [2018-11-09 22:25:41,016 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2018-11-09 22:25:41,060 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 27 states and 32 transitions. Complement of second has 6 states. [2018-11-09 22:25:41,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-09 22:25:41,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-09 22:25:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-09 22:25:41,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-09 22:25:41,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:41,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-09 22:25:41,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:41,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-09 22:25:41,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:41,067 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2018-11-09 22:25:41,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-09 22:25:41,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 11 states and 14 transitions. [2018-11-09 22:25:41,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-09 22:25:41,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-09 22:25:41,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-11-09 22:25:41,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 22:25:41,075 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-09 22:25:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-11-09 22:25:41,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-09 22:25:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-09 22:25:41,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-11-09 22:25:41,093 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-09 22:25:41,093 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-09 22:25:41,093 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-09 22:25:41,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-11-09 22:25:41,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-09 22:25:41,093 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 22:25:41,094 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 22:25:41,094 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-09 22:25:41,094 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 22:25:41,094 INFO L793 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 75#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 76#L12-2 assume true; 77#L11-1 assume !!!(main_~x~0 == main_~y~0); 78#L12 assume main_~x~0 > main_~y~0;main_~y~0 := main_~y~0 + 1; 81#L12-2 [2018-11-09 22:25:41,094 INFO L795 eck$LassoCheckResult]: Loop: 81#L12-2 assume true; 82#L11-1 assume !!!(main_~x~0 == main_~y~0); 85#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 + 1; 81#L12-2 [2018-11-09 22:25:41,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:41,094 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-11-09 22:25:41,094 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:41,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:41,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:25:41,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:41,102 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 2 times [2018-11-09 22:25:41,102 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:41,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:41,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:25:41,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:41,109 INFO L82 PathProgramCache]: Analyzing trace with hash 150863077, now seen corresponding path program 1 times [2018-11-09 22:25:41,109 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:41,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:41,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,110 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 22:25:41,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:25:41,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-09 22:25:41,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-09 22:25:41,182 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 22:25:41,182 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 22:25:41,182 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 22:25:41,182 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 22:25:41,183 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 22:25:41,183 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:41,183 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 22:25:41,183 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 22:25:41,183 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration2_Loop [2018-11-09 22:25:41,183 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 22:25:41,183 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 22:25:41,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,242 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 22:25:41,242 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/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 [2018-11-09 22:25:41,244 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 22:25:41,244 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 22:25:41,260 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 22:25:41,260 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_b0e247a6-a222-4645-a04e-9d8734319a16/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 [2018-11-09 22:25:41,265 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 22:25:41,265 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 22:25:41,282 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 22:25:41,282 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_b0e247a6-a222-4645-a04e-9d8734319a16/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 [2018-11-09 22:25:41,285 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 22:25:41,285 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/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 [2018-11-09 22:25:41,304 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 22:25:41,304 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 22:25:41,464 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-09 22:25:41,465 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 22:25:41,465 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 22:25:41,465 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 22:25:41,465 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 22:25:41,465 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 22:25:41,465 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:41,465 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 22:25:41,465 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 22:25:41,465 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration2_Loop [2018-11-09 22:25:41,465 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 22:25:41,466 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 22:25:41,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,529 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 22:25:41,529 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 22:25:41,530 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 [2018-11-09 22:25:41,530 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 22:25:41,531 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 22:25:41,531 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 22:25:41,531 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 22:25:41,533 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-09 22:25:41,533 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-09 22:25:41,536 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 22:25:41,537 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 [2018-11-09 22:25:41,537 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 22:25:41,537 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 22:25:41,538 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 22:25:41,538 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 22:25:41,538 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 22:25:41,538 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 22:25:41,538 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 22:25:41,542 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 22:25:41,545 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-09 22:25:41,546 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-09 22:25:41,546 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 22:25:41,546 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 22:25:41,546 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 22:25:41,546 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-09 22:25:41,547 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 22:25:41,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:41,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:41,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:25:41,573 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 [2018-11-09 22:25:41,573 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-09 22:25:41,586 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 17 states and 22 transitions. Complement of second has 5 states. [2018-11-09 22:25:41,587 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 [2018-11-09 22:25:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-09 22:25:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-09 22:25:41,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-09 22:25:41,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:41,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-09 22:25:41,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:41,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2018-11-09 22:25:41,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:41,589 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2018-11-09 22:25:41,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-09 22:25:41,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2018-11-09 22:25:41,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-09 22:25:41,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-09 22:25:41,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2018-11-09 22:25:41,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 22:25:41,590 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-11-09 22:25:41,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2018-11-09 22:25:41,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-09 22:25:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-09 22:25:41,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2018-11-09 22:25:41,592 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-11-09 22:25:41,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-09 22:25:41,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-09 22:25:41,595 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand 4 states. [2018-11-09 22:25:41,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 22:25:41,610 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2018-11-09 22:25:41,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-09 22:25:41,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2018-11-09 22:25:41,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-09 22:25:41,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 16 transitions. [2018-11-09 22:25:41,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-09 22:25:41,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-09 22:25:41,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2018-11-09 22:25:41,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 22:25:41,613 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-09 22:25:41,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2018-11-09 22:25:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 9. [2018-11-09 22:25:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-09 22:25:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-11-09 22:25:41,616 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-11-09 22:25:41,616 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-11-09 22:25:41,616 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-09 22:25:41,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2018-11-09 22:25:41,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-09 22:25:41,617 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 22:25:41,617 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 22:25:41,617 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-09 22:25:41,617 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 22:25:41,617 INFO L793 eck$LassoCheckResult]: Stem: 190#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 182#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 183#L12-2 assume true; 185#L11-1 [2018-11-09 22:25:41,617 INFO L795 eck$LassoCheckResult]: Loop: 185#L11-1 assume !!!(main_~x~0 == main_~y~0); 188#L12 assume main_~x~0 > main_~y~0;main_~y~0 := main_~y~0 + 1; 184#L12-2 assume true; 185#L11-1 [2018-11-09 22:25:41,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:41,618 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-11-09 22:25:41,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:41,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:41,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:25:41,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:41,625 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 1 times [2018-11-09 22:25:41,625 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:41,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:41,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:25:41,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:41,631 INFO L82 PathProgramCache]: Analyzing trace with hash 889541472, now seen corresponding path program 2 times [2018-11-09 22:25:41,631 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:41,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:41,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:25:41,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,659 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 22:25:41,660 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 22:25:41,660 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 22:25:41,660 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 22:25:41,660 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 22:25:41,660 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:41,660 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 22:25:41,660 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 22:25:41,660 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration3_Loop [2018-11-09 22:25:41,660 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 22:25:41,661 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 22:25:41,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,694 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 22:25:41,695 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:41,701 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 22:25:41,701 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/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 [2018-11-09 22:25:41,725 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 22:25:41,725 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 22:25:41,872 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-09 22:25:41,874 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 22:25:41,874 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 22:25:41,874 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 22:25:41,874 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 22:25:41,874 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 22:25:41,874 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:41,874 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 22:25:41,874 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 22:25:41,874 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration3_Loop [2018-11-09 22:25:41,874 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 22:25:41,874 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 22:25:41,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:41,900 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 22:25:41,900 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 22:25:41,901 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 [2018-11-09 22:25:41,901 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 22:25:41,901 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 22:25:41,901 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 22:25:41,901 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 22:25:41,902 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 22:25:41,902 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 22:25:41,902 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 22:25:41,905 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 22:25:41,907 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-09 22:25:41,907 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-09 22:25:41,908 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 22:25:41,908 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 22:25:41,908 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 22:25:41,908 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-09 22:25:41,910 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 22:25:41,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:41,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:41,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:41,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:25:41,943 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 [2018-11-09 22:25:41,943 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-11-09 22:25:41,952 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 19 states and 21 transitions. Complement of second has 5 states. [2018-11-09 22:25:41,953 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 [2018-11-09 22:25:41,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-09 22:25:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-09 22:25:41,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-09 22:25:41,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:41,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-09 22:25:41,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:41,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-09 22:25:41,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:41,954 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2018-11-09 22:25:41,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-09 22:25:41,955 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 11 states and 12 transitions. [2018-11-09 22:25:41,955 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-09 22:25:41,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-09 22:25:41,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2018-11-09 22:25:41,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 22:25:41,956 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-09 22:25:41,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2018-11-09 22:25:41,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-11-09 22:25:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-09 22:25:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-11-09 22:25:41,957 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-09 22:25:41,957 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-09 22:25:41,957 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-09 22:25:41,957 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2018-11-09 22:25:41,958 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-09 22:25:41,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 22:25:41,958 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 22:25:41,958 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-09 22:25:41,958 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 22:25:41,958 INFO L793 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 249#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 250#L12-2 assume true; 251#L11-1 assume !!!(main_~x~0 == main_~y~0); 255#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 + 1; 252#L12-2 assume true; 253#L11-1 [2018-11-09 22:25:41,958 INFO L795 eck$LassoCheckResult]: Loop: 253#L11-1 assume !!!(main_~x~0 == main_~y~0); 254#L12 assume main_~x~0 > main_~y~0;main_~y~0 := main_~y~0 + 1; 257#L12-2 assume true; 253#L11-1 [2018-11-09 22:25:41,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:41,958 INFO L82 PathProgramCache]: Analyzing trace with hash 889541534, now seen corresponding path program 2 times [2018-11-09 22:25:41,959 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:41,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:41,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 22:25:41,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:41,964 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 2 times [2018-11-09 22:25:41,964 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:41,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:41,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 22:25:41,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:25:41,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:41,970 INFO L82 PathProgramCache]: Analyzing trace with hash 383635077, now seen corresponding path program 2 times [2018-11-09 22:25:41,970 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:25:41,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:25:41,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 22:25:41,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:25:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:25:41,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-09 22:25:41,989 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-09 22:25:41,995 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-09 22:25:42,000 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-09 22:25:42,000 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-09 22:25:42,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:42,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:25:42,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-09 22:25:42,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-09 22:25:42,045 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 22:25:42,045 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 22:25:42,045 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 22:25:42,045 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 22:25:42,045 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 22:25:42,045 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:42,045 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 22:25:42,045 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 22:25:42,045 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration4_Loop [2018-11-09 22:25:42,045 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 22:25:42,046 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 22:25:42,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:42,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:42,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:42,078 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 22:25:42,078 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/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 [2018-11-09 22:25:42,090 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 22:25:42,090 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 22:25:42,108 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 22:25:42,108 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:42,112 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 22:25:42,112 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 22:25:42,128 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 22:25:42,128 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:42,131 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 22:25:42,131 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0e247a6-a222-4645-a04e-9d8734319a16/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:42,149 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 22:25:42,149 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 22:25:42,289 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-09 22:25:42,291 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 22:25:42,291 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 22:25:42,291 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 22:25:42,291 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 22:25:42,291 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 22:25:42,291 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 22:25:42,291 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 22:25:42,291 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 22:25:42,291 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration4_Loop [2018-11-09 22:25:42,292 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 22:25:42,292 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 22:25:42,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:42,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:42,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 22:25:42,317 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 22:25:42,317 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 22:25:42,317 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 [2018-11-09 22:25:42,318 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 22:25:42,318 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 22:25:42,318 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 22:25:42,318 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 22:25:42,320 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-09 22:25:42,320 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-09 22:25:42,323 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 22:25:42,324 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 [2018-11-09 22:25:42,328 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 22:25:42,328 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 22:25:42,328 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 22:25:42,328 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 22:25:42,329 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-09 22:25:42,329 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-09 22:25:42,332 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 22:25:42,332 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 [2018-11-09 22:25:42,333 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 22:25:42,333 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 22:25:42,333 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 22:25:42,333 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 22:25:42,333 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 22:25:42,334 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 22:25:42,334 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 22:25:42,338 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 22:25:42,341 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-09 22:25:42,341 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-09 22:25:42,341 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 22:25:42,342 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 22:25:42,342 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 22:25:42,342 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-09 22:25:42,342 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 22:25:42,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:42,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:42,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:25:42,384 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 [2018-11-09 22:25:42,384 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-09 22:25:42,389 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 12 states and 13 transitions. Complement of second has 5 states. [2018-11-09 22:25:42,389 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 [2018-11-09 22:25:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-09 22:25:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-09 22:25:42,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-09 22:25:42,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:42,390 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-09 22:25:42,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:42,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:42,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:25:42,410 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-09 22:25:42,410 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-09 22:25:42,415 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 12 states and 13 transitions. Complement of second has 5 states. [2018-11-09 22:25:42,416 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 [2018-11-09 22:25:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-09 22:25:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-09 22:25:42,416 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-09 22:25:42,416 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:42,416 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-09 22:25:42,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:25:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:42,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:25:42,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:25:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:25:42,436 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-09 22:25:42,436 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-09 22:25:42,441 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 14 states and 15 transitions. Complement of second has 6 states. [2018-11-09 22:25:42,441 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 [2018-11-09 22:25:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-09 22:25:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-11-09 22:25:42,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-09 22:25:42,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:42,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-09 22:25:42,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:42,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-09 22:25:42,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 22:25:42,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2018-11-09 22:25:42,443 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-09 22:25:42,443 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2018-11-09 22:25:42,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-09 22:25:42,444 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-09 22:25:42,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-09 22:25:42,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-09 22:25:42,444 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 22:25:42,444 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 22:25:42,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-09 22:25:42,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-09 22:25:42,444 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2018-11-09 22:25:42,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 22:25:42,444 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-09 22:25:42,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-09 22:25:42,444 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-09 22:25:42,444 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-09 22:25:42,444 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-09 22:25:42,444 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-09 22:25:42,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-09 22:25:42,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-09 22:25:42,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-09 22:25:42,445 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 22:25:42,445 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 22:25:42,445 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 22:25:42,445 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-09 22:25:42,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-09 22:25:42,445 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-09 22:25:42,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-09 22:25:42,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 10:25:42 BoogieIcfgContainer [2018-11-09 22:25:42,449 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-09 22:25:42,449 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-09 22:25:42,449 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-09 22:25:42,449 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-09 22:25:42,449 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:25:40" (3/4) ... [2018-11-09 22:25:42,452 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-09 22:25:42,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-09 22:25:42,452 INFO L168 Benchmark]: Toolchain (without parser) took 2584.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 953.8 MB in the beginning and 847.1 MB in the end (delta: 106.7 MB). Peak memory consumption was 224.6 MB. Max. memory is 11.5 GB. [2018-11-09 22:25:42,453 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 22:25:42,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.37 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-09 22:25:42,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.01 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 22:25:42,454 INFO L168 Benchmark]: Boogie Preprocessor took 10.26 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-09 22:25:42,454 INFO L168 Benchmark]: RCFGBuilder took 154.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-09 22:25:42,455 INFO L168 Benchmark]: BuchiAutomizer took 2228.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 847.1 MB in the end (delta: 260.2 MB). Peak memory consumption was 260.2 MB. Max. memory is 11.5 GB. [2018-11-09 22:25:42,455 INFO L168 Benchmark]: Witness Printer took 2.62 ms. Allocated memory is still 1.1 GB. Free memory is still 847.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 22:25:42,458 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.37 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.01 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.26 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 154.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2228.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 847.1 MB in the end (delta: 260.2 MB). Peak memory consumption was 260.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.62 ms. Allocated memory is still 1.1 GB. Free memory is still 847.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * x + y and consists of 4 locations. One deterministic module has affine ranking function -1 * x + y and consists of 3 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 37 SDtfs, 33 SDslu, 10 SDs, 0 SdLazy, 42 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax199 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...