./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/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 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 07:46:35,998 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:46:35,999 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:46:36,005 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:46:36,006 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:46:36,006 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:46:36,007 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:46:36,008 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:46:36,010 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:46:36,010 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:46:36,011 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:46:36,011 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:46:36,012 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:46:36,012 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:46:36,013 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:46:36,013 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:46:36,013 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:46:36,014 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:46:36,016 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:46:36,016 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:46:36,017 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:46:36,018 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:46:36,019 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:46:36,020 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:46:36,020 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:46:36,020 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:46:36,021 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:46:36,021 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:46:36,022 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:46:36,023 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:46:36,023 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:46:36,023 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:46:36,023 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:46:36,024 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:46:36,024 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:46:36,025 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:46:36,025 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 07:46:36,033 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:46:36,033 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:46:36,034 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 07:46:36,035 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 07:46:36,035 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 07:46:36,035 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 07:46:36,035 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 07:46:36,035 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 07:46:36,035 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 07:46:36,035 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 07:46:36,036 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 07:46:36,036 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:46:36,036 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 07:46:36,036 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:46:36,036 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:46:36,036 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 07:46:36,036 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 07:46:36,036 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 07:46:36,037 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:46:36,037 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 07:46:36,037 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 07:46:36,037 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:46:36,037 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:46:36,037 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 07:46:36,037 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:46:36,038 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 07:46:36,038 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 07:46:36,038 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 07:46:36,039 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_bdc045b4-81b2-4edc-bb0e-665bafa7a113/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 -> 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 [2018-11-10 07:46:36,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:46:36,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:46:36,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:46:36,075 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:46:36,075 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:46:36,076 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined_true-termination_true-no-overflow.c [2018-11-10 07:46:36,121 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/data/6a93d9a7c/cc8f7a151c88416383ad6f5937c0acaa/FLAG36112c21c [2018-11-10 07:46:36,513 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:46:36,513 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/sv-benchmarks/c/termination-restricted-15/MinusUserDefined_true-termination_true-no-overflow.c [2018-11-10 07:46:36,517 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/data/6a93d9a7c/cc8f7a151c88416383ad6f5937c0acaa/FLAG36112c21c [2018-11-10 07:46:36,527 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/data/6a93d9a7c/cc8f7a151c88416383ad6f5937c0acaa [2018-11-10 07:46:36,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:46:36,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 07:46:36,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:46:36,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:46:36,534 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:46:36,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:46:36" (1/1) ... [2018-11-10 07:46:36,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332681e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36, skipping insertion in model container [2018-11-10 07:46:36,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:46:36" (1/1) ... [2018-11-10 07:46:36,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:46:36,553 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:46:36,649 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:46:36,651 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:46:36,660 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:46:36,669 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:46:36,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36 WrapperNode [2018-11-10 07:46:36,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:46:36,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 07:46:36,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 07:46:36,670 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 07:46:36,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36" (1/1) ... [2018-11-10 07:46:36,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36" (1/1) ... [2018-11-10 07:46:36,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 07:46:36,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:46:36,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:46:36,688 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:46:36,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36" (1/1) ... [2018-11-10 07:46:36,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36" (1/1) ... [2018-11-10 07:46:36,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36" (1/1) ... [2018-11-10 07:46:36,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36" (1/1) ... [2018-11-10 07:46:36,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36" (1/1) ... [2018-11-10 07:46:36,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36" (1/1) ... [2018-11-10 07:46:36,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36" (1/1) ... [2018-11-10 07:46:36,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:46:36,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:46:36,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:46:36,700 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:46:36,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:46:36,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:46:36,857 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:46:36,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:46:36 BoogieIcfgContainer [2018-11-10 07:46:36,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:46:36,858 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 07:46:36,858 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 07:46:36,860 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 07:46:36,860 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:46:36,860 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 07:46:36" (1/3) ... [2018-11-10 07:46:36,861 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a1a953a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 07:46:36, skipping insertion in model container [2018-11-10 07:46:36,861 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:46:36,861 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:46:36" (2/3) ... [2018-11-10 07:46:36,862 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a1a953a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 07:46:36, skipping insertion in model container [2018-11-10 07:46:36,862 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:46:36,862 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:46:36" (3/3) ... [2018-11-10 07:46:36,863 INFO L375 chiAutomizerObserver]: Analyzing ICFG MinusUserDefined_true-termination_true-no-overflow.c [2018-11-10 07:46:36,908 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 07:46:36,909 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 07:46:36,909 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 07:46:36,909 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 07:46:36,909 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:46:36,909 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:46:36,909 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 07:46:36,909 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:46:36,909 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 07:46:36,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-10 07:46:36,931 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-10 07:46:36,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:46:36,932 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:46:36,937 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 07:46:36,937 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-10 07:46:36,938 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 07:46:36,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-10 07:46:36,939 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-10 07:46:36,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:46:36,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:46:36,940 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 07:46:36,940 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-10 07:46:36,944 INFO L793 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 4#L13-3true [2018-11-10 07:46:36,945 INFO L795 eck$LassoCheckResult]: Loop: 4#L13-3true assume true; 9#L13-1true assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 4#L13-3true [2018-11-10 07:46:36,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:36,948 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-10 07:46:36,950 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:46:36,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:46:36,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:36,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:46:36,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:37,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1159, now seen corresponding path program 1 times [2018-11-10 07:46:37,013 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:46:37,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:46:37,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:37,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:46:37,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:37,021 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-11-10 07:46:37,021 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:46:37,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:46:37,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:37,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:46:37,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,071 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:46:37,072 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:46:37,072 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:46:37,072 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:46:37,072 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:46:37,072 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,072 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:46:37,072 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:46:37,073 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 07:46:37,073 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:46:37,073 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:46:37,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,170 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:46:37,171 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,184 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:46:37,184 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:46:37,218 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:46:37,218 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,221 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:46:37,221 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:46:37,237 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:46:37,237 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,239 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:46:37,239 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,257 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:46:37,257 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:46:37,288 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:46:37,289 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:46:37,289 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:46:37,289 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:46:37,289 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:46:37,289 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:46:37,289 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,290 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:46:37,290 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:46:37,290 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 07:46:37,290 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:46:37,290 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:46:37,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,359 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:46:37,363 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:46:37,364 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:46:37,365 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:46:37,365 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:46:37,366 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:46:37,366 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:46:37,370 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:46:37,370 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:46:37,377 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:46:37,378 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:46:37,378 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:46:37,378 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:46:37,378 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:46:37,378 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:46:37,381 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:46:37,381 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:46:37,389 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:46:37,389 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:46:37,390 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:46:37,390 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:46:37,390 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:46:37,390 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:46:37,391 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:46:37,391 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:46:37,391 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:46:37,396 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:46:37,399 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:46:37,399 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:46:37,400 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:46:37,401 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:46:37,401 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:46:37,401 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-10 07:46:37,402 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:46:37,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:46:37,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:46:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:46:37,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:46:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:46:37,460 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 07:46:37,461 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 3 states. [2018-11-10 07:46:37,499 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 3 states. Result 32 states and 45 transitions. Complement of second has 5 states. [2018-11-10 07:46:37,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 07:46:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 07:46:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2018-11-10 07:46:37,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-10 07:46:37,503 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:46:37,503 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-10 07:46:37,503 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:46:37,503 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-10 07:46:37,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:46:37,504 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 45 transitions. [2018-11-10 07:46:37,505 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:46:37,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 16 states and 21 transitions. [2018-11-10 07:46:37,509 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-10 07:46:37,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-10 07:46:37,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2018-11-10 07:46:37,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:46:37,510 INFO L705 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2018-11-10 07:46:37,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2018-11-10 07:46:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-11-10 07:46:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-10 07:46:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2018-11-10 07:46:37,528 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2018-11-10 07:46:37,528 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2018-11-10 07:46:37,528 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 07:46:37,529 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2018-11-10 07:46:37,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:46:37,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:46:37,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:46:37,529 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-10 07:46:37,530 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 07:46:37,530 INFO L793 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 79#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 80#L13-3 assume true; 81#L13-1 assume !(main_~x~0 > 0 && main_~y~0 > 0); 85#L21-4 [2018-11-10 07:46:37,530 INFO L795 eck$LassoCheckResult]: Loop: 85#L21-4 assume true; 86#L18 assume !!(main_~x~0 > 0);main_~y~0 := main_~y~0 + 1;main_~res~0 := main_~res~0 + 1; 89#L21-3 assume true; 90#L21-1 assume !(main_~x~0 > 0 && main_~y~0 > 0); 85#L21-4 [2018-11-10 07:46:37,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:37,530 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-11-10 07:46:37,530 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:46:37,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:46:37,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:37,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:46:37,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:37,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1483723, now seen corresponding path program 1 times [2018-11-10 07:46:37,536 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:46:37,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:46:37,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:37,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:46:37,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:37,542 INFO L82 PathProgramCache]: Analyzing trace with hash 149123217, now seen corresponding path program 1 times [2018-11-10 07:46:37,542 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:46:37,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:46:37,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:37,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:46:37,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:37,575 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:46:37,575 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:46:37,575 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:46:37,575 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:46:37,575 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:46:37,575 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,575 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:46:37,575 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:46:37,575 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 07:46:37,575 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:46:37,575 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:46:37,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,632 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:46:37,632 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,634 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:46:37,634 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:46:37,651 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:46:37,651 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,654 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:46:37,654 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:46:37,676 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:46:37,676 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,684 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:46:37,684 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,712 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:46:37,712 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:46:37,746 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:46:37,746 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0=0} Honda state: {ULTIMATE.start_main_~res~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0=-1}, {ULTIMATE.start_main_~res~0=7}, {ULTIMATE.start_main_~res~0=-5}] Lambdas: [8, 1, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/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 [2018-11-10 07:46:37,763 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:46:37,763 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:46:37,779 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:46:37,779 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,782 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:46:37,782 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,810 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:46:37,810 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:46:37,879 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:46:37,880 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:46:37,880 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:46:37,881 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:46:37,881 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:46:37,881 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:46:37,881 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:37,881 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:46:37,881 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:46:37,881 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 07:46:37,881 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:46:37,881 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:46:37,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:37,955 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:46:37,955 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:46:37,956 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:46:37,957 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:46:37,957 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:46:37,957 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:46:37,957 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:46:37,958 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:46:37,958 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:46:37,965 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:46:37,966 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:46:37,966 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:46:37,966 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:46:37,967 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:46:37,967 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:46:37,967 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:46:37,968 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:46:37,969 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:46:37,971 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:46:37,972 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:46:37,974 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:46:37,974 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:46:37,974 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:46:37,974 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:46:37,975 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:46:37,975 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:46:37,979 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:46:37,979 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:46:37,980 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:46:37,980 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:46:37,980 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:46:37,980 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:46:37,980 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:46:37,981 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:46:37,981 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:46:37,981 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:46:37,982 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:46:37,982 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:46:37,982 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:46:37,982 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:46:37,982 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:46:37,982 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:46:37,983 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:46:37,983 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:46:37,988 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:46:37,990 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:46:37,990 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:46:37,991 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:46:37,991 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:46:37,991 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:46:37,991 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-10 07:46:37,991 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:46:38,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:46:38,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:46:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:46:38,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:46:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:46:38,043 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 07:46:38,043 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-10 07:46:38,068 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 41 states and 52 transitions. Complement of second has 7 states. [2018-11-10 07:46:38,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:46:38,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:46:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-10 07:46:38,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-10 07:46:38,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:46:38,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-10 07:46:38,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:46:38,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-10 07:46:38,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:46:38,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2018-11-10 07:46:38,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:46:38,072 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 27 states and 33 transitions. [2018-11-10 07:46:38,072 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-10 07:46:38,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-10 07:46:38,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 33 transitions. [2018-11-10 07:46:38,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:46:38,073 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2018-11-10 07:46:38,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 33 transitions. [2018-11-10 07:46:38,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-10 07:46:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-10 07:46:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2018-11-10 07:46:38,075 INFO L728 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2018-11-10 07:46:38,075 INFO L608 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2018-11-10 07:46:38,075 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 07:46:38,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2018-11-10 07:46:38,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:46:38,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:46:38,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:46:38,076 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-11-10 07:46:38,076 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 07:46:38,077 INFO L793 eck$LassoCheckResult]: Stem: 187#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 183#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 184#L13-3 assume true; 185#L13-1 assume !(main_~x~0 > 0 && main_~y~0 > 0); 192#L21-4 assume true; 191#L18 assume !!(main_~x~0 > 0);main_~y~0 := main_~y~0 + 1;main_~res~0 := main_~res~0 + 1; 207#L21-3 assume true; 204#L21-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 203#L21-3 assume true; 202#L21-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 200#L21-3 assume true; 196#L21-1 [2018-11-10 07:46:38,077 INFO L795 eck$LassoCheckResult]: Loop: 196#L21-1 assume !(main_~x~0 > 0 && main_~y~0 > 0); 188#L21-4 assume true; 189#L18 assume !!(main_~x~0 > 0);main_~y~0 := main_~y~0 + 1;main_~res~0 := main_~res~0 + 1; 193#L21-3 assume true; 196#L21-1 [2018-11-10 07:46:38,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:38,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1533661155, now seen corresponding path program 1 times [2018-11-10 07:46:38,077 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:46:38,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:46:38,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:38,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:46:38,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:46:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:46:38,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:46:38,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 07:46:38,117 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 07:46:38,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:38,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1894903, now seen corresponding path program 2 times [2018-11-10 07:46:38,117 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:46:38,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:46:38,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:38,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:46:38,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:46:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:46:38,140 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:46:38,141 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:46:38,141 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:46:38,141 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:46:38,141 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:46:38,141 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:38,141 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:46:38,141 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:46:38,141 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 07:46:38,142 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:46:38,142 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:46:38,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:38,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:38,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:38,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:38,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:38,213 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:46:38,213 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:38,214 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:46:38,215 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdc045b4-81b2-4edc-bb0e-665bafa7a113/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:38,232 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:46:38,232 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:46:38,249 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:46:38,250 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:46:38,250 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:46:38,250 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:46:38,250 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:46:38,250 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:46:38,250 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:46:38,250 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:46:38,251 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:46:38,251 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 07:46:38,251 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:46:38,251 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:46:38,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:38,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:38,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:38,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:38,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:46:38,312 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:46:38,313 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:46:38,313 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:46:38,314 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:46:38,314 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:46:38,314 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:46:38,314 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:46:38,314 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:46:38,314 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:46:38,314 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:46:38,317 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:46:38,319 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:46:38,319 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 07:46:38,320 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:46:38,320 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:46:38,320 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:46:38,320 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-10 07:46:38,320 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:46:38,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:46:38,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:46:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:46:38,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:46:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:46:38,385 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 [2018-11-10 07:46:38,385 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-11-10 07:46:38,395 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 46 states and 57 transitions. Complement of second has 7 states. [2018-11-10 07:46:38,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:46:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:46:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-10 07:46:38,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-10 07:46:38,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:46:38,396 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 07:46:38,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:46:38,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:46:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:46:38,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:46:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:46:38,432 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 07:46:38,433 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-11-10 07:46:38,454 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 44 states and 53 transitions. Complement of second has 7 states. [2018-11-10 07:46:38,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:46:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:46:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-10 07:46:38,454 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-10 07:46:38,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:46:38,455 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 07:46:38,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:46:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:46:38,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:46:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:46:38,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:46:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:46:38,509 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 3 loop predicates [2018-11-10 07:46:38,509 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-11-10 07:46:38,524 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 50 states and 64 transitions. Complement of second has 6 states. [2018-11-10 07:46:38,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:46:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:46:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-11-10 07:46:38,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-10 07:46:38,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:46:38,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-10 07:46:38,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:46:38,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-10 07:46:38,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:46:38,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 64 transitions. [2018-11-10 07:46:38,527 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 07:46:38,527 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 0 states and 0 transitions. [2018-11-10 07:46:38,527 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 07:46:38,527 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 07:46:38,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 07:46:38,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 07:46:38,527 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:46:38,527 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:46:38,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 07:46:38,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 07:46:38,530 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2018-11-10 07:46:38,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:46:38,532 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-10 07:46:38,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 07:46:38,532 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-10 07:46:38,532 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 07:46:38,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 07:46:38,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 07:46:38,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 07:46:38,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 07:46:38,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 07:46:38,532 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:46:38,532 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:46:38,532 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:46:38,533 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 07:46:38,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 07:46:38,533 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 07:46:38,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 07:46:38,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 07:46:38 BoogieIcfgContainer [2018-11-10 07:46:38,537 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 07:46:38,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:46:38,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:46:38,537 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:46:38,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:46:36" (3/4) ... [2018-11-10 07:46:38,539 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 07:46:38,539 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:46:38,540 INFO L168 Benchmark]: Toolchain (without parser) took 2009.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 960.3 MB in the beginning and 906.7 MB in the end (delta: 53.6 MB). Peak memory consumption was 188.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:46:38,541 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:46:38,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.57 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:46:38,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.38 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:46:38,542 INFO L168 Benchmark]: Boogie Preprocessor took 11.47 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. [2018-11-10 07:46:38,542 INFO L168 Benchmark]: RCFGBuilder took 157.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-10 07:46:38,542 INFO L168 Benchmark]: BuchiAutomizer took 1678.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 906.7 MB in the end (delta: 219.0 MB). Peak memory consumption was 219.0 MB. Max. memory is 11.5 GB. [2018-11-10 07:46:38,543 INFO L168 Benchmark]: Witness Printer took 2.69 ms. Allocated memory is still 1.2 GB. Free memory is still 906.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:46:38,544 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.57 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.38 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.47 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. * RCFGBuilder took 157.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1678.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 906.7 MB in the end (delta: 219.0 MB). Peak memory consumption was 219.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.69 ms. Allocated memory is still 1.2 GB. Free memory is still 906.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. One nondeterministic module has affine ranking function -2 * y + 1 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 27 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 47 SDtfs, 50 SDslu, 17 SDs, 0 SdLazy, 41 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...