./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/DivMinus2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/DivMinus2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 4113f10404cd50c48db8fb998633f502f8a0b01a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:13:35,917 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:13:35,919 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:13:35,925 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:13:35,925 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:13:35,926 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:13:35,927 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:13:35,928 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:13:35,930 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:13:35,930 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:13:35,931 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:13:35,931 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:13:35,932 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:13:35,932 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:13:35,933 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:13:35,934 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:13:35,934 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:13:35,936 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:13:35,937 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:13:35,938 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:13:35,939 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:13:35,940 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:13:35,942 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:13:35,942 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:13:35,942 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:13:35,943 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:13:35,943 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:13:35,944 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:13:35,945 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:13:35,945 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:13:35,946 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:13:35,946 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:13:35,946 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:13:35,946 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:13:35,947 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:13:35,948 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:13:35,948 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 09:13:35,959 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:13:35,959 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:13:35,960 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:13:35,960 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:13:35,960 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:13:35,960 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 09:13:35,961 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 09:13:35,961 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 09:13:35,961 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 09:13:35,961 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 09:13:35,961 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 09:13:35,961 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:13:35,961 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 09:13:35,962 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:13:35,962 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:13:35,962 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 09:13:35,962 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 09:13:35,962 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 09:13:35,962 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:13:35,962 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 09:13:35,962 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:13:35,963 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 09:13:35,963 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:13:35,963 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:13:35,963 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 09:13:35,963 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:13:35,963 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:13:35,964 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 09:13:35,964 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 09:13:35,964 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_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 -> 4113f10404cd50c48db8fb998633f502f8a0b01a [2018-11-18 09:13:35,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:13:35,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:13:35,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:13:35,999 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:13:35,999 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:13:36,000 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/DivMinus2_true-termination_true-no-overflow.c [2018-11-18 09:13:36,037 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/data/88299e982/c5b02b239a444f4faf9cfd0623efd7fb/FLAGd7bb36db5 [2018-11-18 09:13:36,428 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:13:36,428 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/sv-benchmarks/c/termination-restricted-15/DivMinus2_true-termination_true-no-overflow.c [2018-11-18 09:13:36,432 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/data/88299e982/c5b02b239a444f4faf9cfd0623efd7fb/FLAGd7bb36db5 [2018-11-18 09:13:36,444 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/data/88299e982/c5b02b239a444f4faf9cfd0623efd7fb [2018-11-18 09:13:36,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:13:36,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:13:36,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:13:36,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:13:36,451 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:13:36,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:13:36" (1/1) ... [2018-11-18 09:13:36,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78bb2e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36, skipping insertion in model container [2018-11-18 09:13:36,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:13:36" (1/1) ... [2018-11-18 09:13:36,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:13:36,470 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:13:36,575 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:13:36,577 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:13:36,586 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:13:36,594 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:13:36,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36 WrapperNode [2018-11-18 09:13:36,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:13:36,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:13:36,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:13:36,595 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:13:36,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36" (1/1) ... [2018-11-18 09:13:36,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36" (1/1) ... [2018-11-18 09:13:36,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:13:36,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:13:36,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:13:36,620 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:13:36,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36" (1/1) ... [2018-11-18 09:13:36,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36" (1/1) ... [2018-11-18 09:13:36,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36" (1/1) ... [2018-11-18 09:13:36,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36" (1/1) ... [2018-11-18 09:13:36,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36" (1/1) ... [2018-11-18 09:13:36,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36" (1/1) ... [2018-11-18 09:13:36,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36" (1/1) ... [2018-11-18 09:13:36,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:13:36,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:13:36,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:13:36,635 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:13:36,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:13:36,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:13:36,815 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:13:36,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:13:36 BoogieIcfgContainer [2018-11-18 09:13:36,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:13:36,816 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 09:13:36,816 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 09:13:36,818 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 09:13:36,819 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:13:36,819 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 09:13:36" (1/3) ... [2018-11-18 09:13:36,820 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2cf369c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:13:36, skipping insertion in model container [2018-11-18 09:13:36,820 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:13:36,820 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:36" (2/3) ... [2018-11-18 09:13:36,820 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2cf369c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:13:36, skipping insertion in model container [2018-11-18 09:13:36,820 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:13:36,820 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:13:36" (3/3) ... [2018-11-18 09:13:36,822 INFO L375 chiAutomizerObserver]: Analyzing ICFG DivMinus2_true-termination_true-no-overflow.c [2018-11-18 09:13:36,868 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:13:36,868 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 09:13:36,869 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 09:13:36,869 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 09:13:36,869 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:13:36,869 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:13:36,869 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 09:13:36,869 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:13:36,869 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 09:13:36,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-18 09:13:36,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-18 09:13:36,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:13:36,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:13:36,904 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:13:36,904 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 09:13:36,904 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 09:13:36,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-18 09:13:36,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-18 09:13:36,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:13:36,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:13:36,905 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:13:36,905 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 09:13:36,912 INFO L794 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 8#L14-3true [2018-11-18 09:13:36,912 INFO L796 eck$LassoCheckResult]: Loop: 8#L14-3true assume true; 12#L14-1true assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 4#L17-2true assume !true; 13#L16-3true main_~res~0 := 1 + main_~res~0; 8#L14-3true [2018-11-18 09:13:36,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:36,917 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 09:13:36,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:36,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:36,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:36,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:13:36,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:36,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:36,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1114761, now seen corresponding path program 1 times [2018-11-18 09:13:36,991 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:36,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:36,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:36,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:13:36,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:13:37,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:13:37,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:13:37,018 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:13:37,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:13:37,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:13:37,033 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2018-11-18 09:13:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:13:37,037 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2018-11-18 09:13:37,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:13:37,039 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2018-11-18 09:13:37,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-18 09:13:37,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 10 transitions. [2018-11-18 09:13:37,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-18 09:13:37,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-18 09:13:37,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2018-11-18 09:13:37,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:13:37,043 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-18 09:13:37,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2018-11-18 09:13:37,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-11-18 09:13:37,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-18 09:13:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-11-18 09:13:37,060 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-18 09:13:37,061 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-18 09:13:37,061 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 09:13:37,061 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2018-11-18 09:13:37,061 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-18 09:13:37,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:13:37,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:13:37,062 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:13:37,062 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 09:13:37,062 INFO L794 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 32#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 33#L14-3 [2018-11-18 09:13:37,062 INFO L796 eck$LassoCheckResult]: Loop: 33#L14-3 assume true; 39#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 34#L17-2 assume true; 35#L16-1 assume !(0 != main_~ytmp~0); 36#L16-3 main_~res~0 := 1 + main_~res~0; 33#L14-3 [2018-11-18 09:13:37,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:37,062 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-18 09:13:37,063 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:37,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:37,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:13:37,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:37,068 INFO L82 PathProgramCache]: Analyzing trace with hash 34543797, now seen corresponding path program 1 times [2018-11-18 09:13:37,068 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:37,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:37,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:13:37,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:13:37,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:13:37,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:13:37,099 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:13:37,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:13:37,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:13:37,100 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-18 09:13:37,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:13:37,112 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2018-11-18 09:13:37,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:13:37,113 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2018-11-18 09:13:37,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 09:13:37,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2018-11-18 09:13:37,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 09:13:37,114 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 09:13:37,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2018-11-18 09:13:37,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:13:37,114 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-11-18 09:13:37,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2018-11-18 09:13:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-18 09:13:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-18 09:13:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-11-18 09:13:37,115 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-11-18 09:13:37,115 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-11-18 09:13:37,115 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 09:13:37,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2018-11-18 09:13:37,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 09:13:37,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:13:37,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:13:37,117 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:13:37,117 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-18 09:13:37,117 INFO L794 eck$LassoCheckResult]: Stem: 62#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 60#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 61#L14-3 [2018-11-18 09:13:37,117 INFO L796 eck$LassoCheckResult]: Loop: 61#L14-3 assume true; 63#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 57#L17-2 assume true; 58#L16-1 assume !!(0 != main_~ytmp~0); 59#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 64#L17-2 assume true; 66#L16-1 assume !(0 != main_~ytmp~0); 65#L16-3 main_~res~0 := 1 + main_~res~0; 61#L14-3 [2018-11-18 09:13:37,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:37,117 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2018-11-18 09:13:37,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:37,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:37,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:13:37,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:37,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1696240080, now seen corresponding path program 1 times [2018-11-18 09:13:37,123 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:37,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:37,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:13:37,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:37,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1005678606, now seen corresponding path program 1 times [2018-11-18 09:13:37,133 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:37,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:37,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:13:37,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,200 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:13:37,200 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:13:37,201 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:13:37,201 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:13:37,201 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:13:37,201 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:37,201 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:13:37,201 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:13:37,201 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 09:13:37,201 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:13:37,202 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:13:37,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,366 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:13:37,366 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:37,369 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:37,369 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:37,388 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:13:37,388 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:37,390 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:37,390 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:37,405 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:13:37,405 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:37,408 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:37,408 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:37,425 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:13:37,425 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:37,566 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:13:37,567 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:13:37,567 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:13:37,567 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:13:37,568 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:13:37,568 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:13:37,568 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:37,568 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:13:37,568 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:13:37,568 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 09:13:37,568 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:13:37,568 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:13:37,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,624 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:13:37,627 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:13:37,628 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 [2018-11-18 09:13:37,629 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:13:37,630 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:13:37,630 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:13:37,630 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:13:37,630 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:13:37,632 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:13:37,632 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:13:37,639 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:13:37,643 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:13:37,643 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-18 09:13:37,644 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:13:37,644 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:13:37,645 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:13:37,645 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-18 09:13:37,646 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:13:37,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:37,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:37,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:13:37,718 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 09:13:37,719 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3 Second operand 5 states. [2018-11-18 09:13:37,749 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3. Second operand 5 states. Result 33 states and 40 transitions. Complement of second has 7 states. [2018-11-18 09:13:37,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 09:13:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 09:13:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-18 09:13:37,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-18 09:13:37,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:37,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-18 09:13:37,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:37,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 2 letters. Loop has 16 letters. [2018-11-18 09:13:37,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:37,754 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 40 transitions. [2018-11-18 09:13:37,755 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-18 09:13:37,757 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 26 states and 31 transitions. [2018-11-18 09:13:37,757 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-18 09:13:37,757 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-18 09:13:37,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 31 transitions. [2018-11-18 09:13:37,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:13:37,758 INFO L705 BuchiCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-11-18 09:13:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 31 transitions. [2018-11-18 09:13:37,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-18 09:13:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 09:13:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2018-11-18 09:13:37,760 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 30 transitions. [2018-11-18 09:13:37,761 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 30 transitions. [2018-11-18 09:13:37,761 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 09:13:37,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 30 transitions. [2018-11-18 09:13:37,762 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-18 09:13:37,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:13:37,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:13:37,762 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-18 09:13:37,762 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:13:37,762 INFO L794 eck$LassoCheckResult]: Stem: 164#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 162#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 163#L14-3 assume true; 165#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 161#L17-2 assume true; 158#L16-1 assume !!(0 != main_~ytmp~0); 159#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 168#L17-2 assume true; 156#L16-1 [2018-11-18 09:13:37,763 INFO L796 eck$LassoCheckResult]: Loop: 156#L16-1 assume !!(0 != main_~ytmp~0); 157#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 160#L17-2 assume true; 156#L16-1 [2018-11-18 09:13:37,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:37,763 INFO L82 PathProgramCache]: Analyzing trace with hash 150908646, now seen corresponding path program 1 times [2018-11-18 09:13:37,763 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:37,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:37,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:13:37,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash 51724, now seen corresponding path program 1 times [2018-11-18 09:13:37,770 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:37,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:37,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:13:37,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:37,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1111263993, now seen corresponding path program 2 times [2018-11-18 09:13:37,776 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:37,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:37,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:13:37,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:37,798 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:13:37,798 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:13:37,798 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:13:37,799 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:13:37,799 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:13:37,799 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:37,799 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:13:37,799 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:13:37,799 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 09:13:37,799 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:13:37,799 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:13:37,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:37,871 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:13:37,872 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:37,884 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:37,884 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:37,900 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:13:37,900 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:37,903 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:37,903 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:37,928 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:13:37,929 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:37,938 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:13:37,938 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-4}, {ULTIMATE.start_main_~x~0=-3}, {ULTIMATE.start_main_~x~0=6}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:37,955 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:37,955 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:37,970 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:13:37,970 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:37,973 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:37,973 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:37,994 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:13:37,994 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:38,020 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:13:38,021 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:13:38,021 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:13:38,021 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:13:38,021 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:13:38,021 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:13:38,021 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:38,022 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:13:38,022 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:13:38,022 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 09:13:38,022 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:13:38,022 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:13:38,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,065 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:13:38,065 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:13:38,066 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 [2018-11-18 09:13:38,067 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:13:38,067 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:13:38,067 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:13:38,067 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:13:38,069 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:13:38,069 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:13:38,072 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:13:38,072 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 [2018-11-18 09:13:38,073 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:13:38,073 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:13:38,073 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:13:38,073 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:13:38,073 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:13:38,074 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:13:38,074 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:13:38,076 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:13:38,076 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 [2018-11-18 09:13:38,077 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:13:38,077 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:13:38,077 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:13:38,077 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:13:38,078 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:13:38,078 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:13:38,083 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:13:38,084 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 [2018-11-18 09:13:38,084 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:13:38,084 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:13:38,084 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:13:38,084 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:13:38,085 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:13:38,085 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:13:38,085 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:13:38,088 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:13:38,090 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:13:38,090 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 09:13:38,090 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:13:38,090 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:13:38,091 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:13:38,091 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2018-11-18 09:13:38,091 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:13:38,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:13:38,138 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 [2018-11-18 09:13:38,138 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 30 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-18 09:13:38,148 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 30 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 49 states and 59 transitions. Complement of second has 5 states. [2018-11-18 09:13:38,148 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 [2018-11-18 09:13:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:13:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-11-18 09:13:38,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-18 09:13:38,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:38,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 11 letters. Loop has 3 letters. [2018-11-18 09:13:38,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:38,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 6 letters. [2018-11-18 09:13:38,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:38,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 59 transitions. [2018-11-18 09:13:38,151 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-18 09:13:38,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 44 states and 54 transitions. [2018-11-18 09:13:38,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-18 09:13:38,152 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-18 09:13:38,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2018-11-18 09:13:38,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:13:38,152 INFO L705 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2018-11-18 09:13:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2018-11-18 09:13:38,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-18 09:13:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 09:13:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2018-11-18 09:13:38,155 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2018-11-18 09:13:38,155 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2018-11-18 09:13:38,155 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 09:13:38,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2018-11-18 09:13:38,156 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-18 09:13:38,156 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:13:38,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:13:38,157 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 09:13:38,157 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:13:38,157 INFO L794 eck$LassoCheckResult]: Stem: 295#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 293#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 294#L14-3 assume true; 296#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 304#L17-2 assume true; 322#L16-1 assume !!(0 != main_~ytmp~0); 321#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 320#L17-2 assume true; 288#L16-1 assume !!(0 != main_~ytmp~0); 299#L17 assume !(main_~ytmp~0 > 0);main_~ytmp~0 := 1 + main_~ytmp~0;main_~x~0 := 1 + main_~x~0; 300#L17-2 [2018-11-18 09:13:38,157 INFO L796 eck$LassoCheckResult]: Loop: 300#L17-2 assume true; 308#L16-1 assume !!(0 != main_~ytmp~0); 309#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 300#L17-2 [2018-11-18 09:13:38,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:38,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1005678549, now seen corresponding path program 1 times [2018-11-18 09:13:38,158 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:38,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:38,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:38,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:13:38,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:13:38,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:13:38,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:13:38,197 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 09:13:38,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:38,198 INFO L82 PathProgramCache]: Analyzing trace with hash 45874, now seen corresponding path program 2 times [2018-11-18 09:13:38,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:38,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:38,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:38,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:13:38,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:38,215 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:13:38,215 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:13:38,215 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:13:38,215 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:13:38,215 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:13:38,215 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:38,215 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:13:38,215 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:13:38,215 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-18 09:13:38,215 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:13:38,215 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:13:38,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,257 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:13:38,257 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:38,263 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:38,263 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:38,279 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:13:38,280 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:38,296 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:13:38,297 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:13:38,297 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:13:38,297 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:13:38,297 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:13:38,297 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:13:38,297 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:38,297 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:13:38,297 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:13:38,297 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-18 09:13:38,297 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:13:38,297 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:13:38,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,336 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:13:38,336 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:13:38,336 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 [2018-11-18 09:13:38,337 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:13:38,337 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:13:38,337 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:13:38,337 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:13:38,337 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:13:38,338 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:13:38,338 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:13:38,340 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:13:38,341 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:13:38,341 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 09:13:38,341 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:13:38,341 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:13:38,341 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:13:38,341 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2018-11-18 09:13:38,341 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:13:38,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:13:38,363 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 [2018-11-18 09:13:38,364 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 15 Second operand 3 states. [2018-11-18 09:13:38,379 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 52 states and 65 transitions. Complement of second has 5 states. [2018-11-18 09:13:38,379 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 [2018-11-18 09:13:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 09:13:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2018-11-18 09:13:38,380 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 10 letters. Loop has 3 letters. [2018-11-18 09:13:38,380 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:38,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-18 09:13:38,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:38,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 10 letters. Loop has 6 letters. [2018-11-18 09:13:38,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:38,381 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2018-11-18 09:13:38,382 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-18 09:13:38,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 62 transitions. [2018-11-18 09:13:38,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-18 09:13:38,383 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-18 09:13:38,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 62 transitions. [2018-11-18 09:13:38,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:13:38,383 INFO L705 BuchiCegarLoop]: Abstraction has 49 states and 62 transitions. [2018-11-18 09:13:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 62 transitions. [2018-11-18 09:13:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2018-11-18 09:13:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 09:13:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2018-11-18 09:13:38,386 INFO L728 BuchiCegarLoop]: Abstraction has 46 states and 59 transitions. [2018-11-18 09:13:38,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:13:38,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:13:38,387 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand 4 states. [2018-11-18 09:13:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:13:38,399 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2018-11-18 09:13:38,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:13:38,400 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2018-11-18 09:13:38,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:13:38,401 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 25 states and 29 transitions. [2018-11-18 09:13:38,401 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-18 09:13:38,401 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-18 09:13:38,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 29 transitions. [2018-11-18 09:13:38,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:13:38,402 INFO L705 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2018-11-18 09:13:38,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 29 transitions. [2018-11-18 09:13:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2018-11-18 09:13:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 09:13:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-11-18 09:13:38,403 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-18 09:13:38,403 INFO L608 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-18 09:13:38,403 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 09:13:38,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 25 transitions. [2018-11-18 09:13:38,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:13:38,405 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:13:38,405 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:13:38,406 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 2, 2, 2, 1, 1, 1, 1] [2018-11-18 09:13:38,406 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:13:38,406 INFO L794 eck$LassoCheckResult]: Stem: 521#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 512#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 513#L14-3 assume true; 522#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 526#L17-2 assume true; 519#L16-1 assume !!(0 != main_~ytmp~0); 520#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 525#L17-2 assume true; 532#L16-1 assume !(0 != main_~ytmp~0); 527#L16-3 main_~res~0 := 1 + main_~res~0; 523#L14-3 assume true; 524#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 531#L17-2 assume true; 530#L16-1 assume !!(0 != main_~ytmp~0); 529#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 528#L17-2 assume true; 515#L16-1 [2018-11-18 09:13:38,406 INFO L796 eck$LassoCheckResult]: Loop: 515#L16-1 assume !!(0 != main_~ytmp~0); 518#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 514#L17-2 assume true; 515#L16-1 [2018-11-18 09:13:38,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:38,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1455875115, now seen corresponding path program 2 times [2018-11-18 09:13:38,406 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:38,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:38,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:38,407 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:13:38,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:38,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:38,413 INFO L82 PathProgramCache]: Analyzing trace with hash 51724, now seen corresponding path program 3 times [2018-11-18 09:13:38,414 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:38,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:38,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:38,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:13:38,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:13:38,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1395774024, now seen corresponding path program 3 times [2018-11-18 09:13:38,417 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:13:38,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:13:38,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:38,418 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:13:38,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:13:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:13:38,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:13:38,453 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:13:38,460 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 09:13:38,465 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 09:13:38,465 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:13:38,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:38,470 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:13:38,485 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:13:38,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-18 09:13:38,495 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:13:38,495 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:13:38,495 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:13:38,495 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:13:38,495 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:13:38,495 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:38,495 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:13:38,495 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:13:38,495 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-18 09:13:38,495 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:13:38,495 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:13:38,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,529 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:13:38,529 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:38,534 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:38,534 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:38,550 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:13:38,550 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/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 [2018-11-18 09:13:38,553 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:38,553 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:38,570 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:13:38,570 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:38,579 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:13:38,579 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=1}] Lambdas: [0, 2, 1] Nus: [1, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:38,594 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:38,595 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:38,609 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:13:38,610 INFO L448 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_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:38,613 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:13:38,613 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3fdc783f-f259-4779-bd62-8e4a56ae1e78/bin-2019/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:38,630 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:13:38,631 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:13:38,647 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:13:38,648 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:13:38,648 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:13:38,648 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:13:38,648 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:13:38,648 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:13:38,649 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:13:38,649 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:13:38,649 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:13:38,649 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-18 09:13:38,649 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:13:38,649 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:13:38,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:13:38,679 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:13:38,679 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:13:38,679 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:13:38,680 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:13:38,680 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:13:38,680 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:13:38,680 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:13:38,682 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:13:38,682 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:13:38,685 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:13:38,685 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 [2018-11-18 09:13:38,686 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:13:38,686 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:13:38,686 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:13:38,686 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:13:38,686 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:13:38,687 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:13:38,687 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:13:38,688 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:13:38,689 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 [2018-11-18 09:13:38,689 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:13:38,689 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:13:38,689 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:13:38,690 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:13:38,691 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:13:38,691 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:13:38,692 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:13:38,693 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 [2018-11-18 09:13:38,693 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:13:38,693 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:13:38,693 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:13:38,694 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:13:38,694 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:13:38,694 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:13:38,694 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:13:38,697 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:13:38,698 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:13:38,698 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 09:13:38,699 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:13:38,699 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:13:38,699 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:13:38,699 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2018-11-18 09:13:38,699 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:13:38,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:13:38,740 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 [2018-11-18 09:13:38,740 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-18 09:13:38,748 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 32 states and 36 transitions. Complement of second has 5 states. [2018-11-18 09:13:38,749 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 [2018-11-18 09:13:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:13:38,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-11-18 09:13:38,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 16 letters. Loop has 3 letters. [2018-11-18 09:13:38,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:38,750 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 09:13:38,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:13:38,795 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 [2018-11-18 09:13:38,795 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-18 09:13:38,805 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 30 states and 33 transitions. Complement of second has 7 states. [2018-11-18 09:13:38,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 09:13:38,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:13:38,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-18 09:13:38,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 16 letters. Loop has 3 letters. [2018-11-18 09:13:38,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:38,807 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 09:13:38,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:13:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:13:38,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:13:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:13:38,828 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 [2018-11-18 09:13:38,828 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-18 09:13:38,834 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 36 states and 43 transitions. Complement of second has 6 states. [2018-11-18 09:13:38,834 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 [2018-11-18 09:13:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:13:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2018-11-18 09:13:38,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 16 letters. Loop has 3 letters. [2018-11-18 09:13:38,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:38,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 19 letters. Loop has 3 letters. [2018-11-18 09:13:38,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:38,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 16 letters. Loop has 6 letters. [2018-11-18 09:13:38,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:13:38,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 43 transitions. [2018-11-18 09:13:38,836 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:13:38,836 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2018-11-18 09:13:38,836 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 09:13:38,836 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 09:13:38,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 09:13:38,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:13:38,836 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:13:38,836 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:13:38,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 09:13:38,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:13:38,836 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 7 states. [2018-11-18 09:13:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:13:38,836 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-18 09:13:38,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:13:38,837 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-18 09:13:38,837 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:13:38,837 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 09:13:38,837 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 09:13:38,837 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 09:13:38,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 09:13:38,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:13:38,837 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:13:38,837 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:13:38,837 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:13:38,837 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 09:13:38,837 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 09:13:38,837 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:13:38,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 09:13:38,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 09:13:38 BoogieIcfgContainer [2018-11-18 09:13:38,843 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 09:13:38,843 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:13:38,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:13:38,843 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:13:38,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:13:36" (3/4) ... [2018-11-18 09:13:38,846 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 09:13:38,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:13:38,846 INFO L168 Benchmark]: Toolchain (without parser) took 2399.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 212.3 MB). Free memory was 959.1 MB in the beginning and 1.2 GB in the end (delta: -225.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:13:38,848 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:13:38,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.78 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:13:38,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.54 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:13:38,849 INFO L168 Benchmark]: Boogie Preprocessor took 13.98 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:13:38,849 INFO L168 Benchmark]: RCFGBuilder took 180.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -167.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 09:13:38,850 INFO L168 Benchmark]: BuchiAutomizer took 2027.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -71.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2018-11-18 09:13:38,850 INFO L168 Benchmark]: Witness Printer took 2.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:13:38,852 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.78 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.54 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.98 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 180.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -167.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2027.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -71.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (4 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One nondeterministic module has affine ranking function ytmp and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 7 iterations. TraceHistogramMax:4. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 91 SDtfs, 70 SDslu, 33 SDs, 0 SdLazy, 63 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax173 hnf100 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq167 hnf93 smp100 dnf100 smp100 tf111 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 6ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...