./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/a.01_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/a.01_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 403dc91589da6bf860a5e1f8b16384fde1e35c86 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 21:18:19,165 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 21:18:19,167 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 21:18:19,175 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 21:18:19,176 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 21:18:19,176 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 21:18:19,177 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 21:18:19,178 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 21:18:19,179 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 21:18:19,180 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 21:18:19,180 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 21:18:19,181 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 21:18:19,181 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 21:18:19,182 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 21:18:19,183 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 21:18:19,183 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 21:18:19,184 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 21:18:19,185 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 21:18:19,186 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 21:18:19,187 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 21:18:19,188 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 21:18:19,189 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 21:18:19,190 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 21:18:19,191 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 21:18:19,191 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 21:18:19,191 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 21:18:19,192 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 21:18:19,193 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 21:18:19,193 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 21:18:19,194 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 21:18:19,194 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 21:18:19,195 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 21:18:19,195 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 21:18:19,195 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 21:18:19,195 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 21:18:19,196 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 21:18:19,196 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-22 21:18:19,211 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 21:18:19,212 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 21:18:19,212 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 21:18:19,213 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 21:18:19,213 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 21:18:19,213 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-22 21:18:19,213 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-22 21:18:19,213 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-22 21:18:19,213 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-22 21:18:19,213 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-22 21:18:19,214 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-22 21:18:19,214 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 21:18:19,214 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-22 21:18:19,214 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 21:18:19,214 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 21:18:19,214 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-22 21:18:19,214 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-22 21:18:19,214 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-22 21:18:19,214 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 21:18:19,215 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-22 21:18:19,215 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 21:18:19,215 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-22 21:18:19,215 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 21:18:19,215 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 21:18:19,215 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-22 21:18:19,215 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 21:18:19,215 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 21:18:19,215 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-22 21:18:19,216 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-22 21:18:19,216 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_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 -> 403dc91589da6bf860a5e1f8b16384fde1e35c86 [2018-11-22 21:18:19,236 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 21:18:19,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 21:18:19,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 21:18:19,247 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 21:18:19,247 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 21:18:19,248 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/a.01_true-termination_true-no-overflow.c [2018-11-22 21:18:19,283 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/bin-2019/uautomizer/data/a933f719f/652cecc1a1e94f22aaeca83fcb969b5b/FLAG17e6118ee [2018-11-22 21:18:19,674 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 21:18:19,674 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/sv-benchmarks/c/termination-restricted-15/a.01_true-termination_true-no-overflow.c [2018-11-22 21:18:19,678 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/bin-2019/uautomizer/data/a933f719f/652cecc1a1e94f22aaeca83fcb969b5b/FLAG17e6118ee [2018-11-22 21:18:19,686 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/bin-2019/uautomizer/data/a933f719f/652cecc1a1e94f22aaeca83fcb969b5b [2018-11-22 21:18:19,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 21:18:19,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 21:18:19,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 21:18:19,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 21:18:19,694 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 21:18:19,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:18:19" (1/1) ... [2018-11-22 21:18:19,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457f80a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19, skipping insertion in model container [2018-11-22 21:18:19,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:18:19" (1/1) ... [2018-11-22 21:18:19,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 21:18:19,712 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 21:18:19,811 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:18:19,813 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 21:18:19,822 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:18:19,830 INFO L195 MainTranslator]: Completed translation [2018-11-22 21:18:19,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19 WrapperNode [2018-11-22 21:18:19,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 21:18:19,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 21:18:19,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 21:18:19,831 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 21:18:19,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19" (1/1) ... [2018-11-22 21:18:19,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19" (1/1) ... [2018-11-22 21:18:19,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 21:18:19,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 21:18:19,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 21:18:19,851 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 21:18:19,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19" (1/1) ... [2018-11-22 21:18:19,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19" (1/1) ... [2018-11-22 21:18:19,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19" (1/1) ... [2018-11-22 21:18:19,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19" (1/1) ... [2018-11-22 21:18:19,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19" (1/1) ... [2018-11-22 21:18:19,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19" (1/1) ... [2018-11-22 21:18:19,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19" (1/1) ... [2018-11-22 21:18:19,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 21:18:19,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 21:18:19,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 21:18:19,862 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 21:18:19,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 21:18:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 21:18:20,043 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 21:18:20,043 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-22 21:18:20,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:18:20 BoogieIcfgContainer [2018-11-22 21:18:20,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 21:18:20,044 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-22 21:18:20,044 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-22 21:18:20,047 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-22 21:18:20,048 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 21:18:20,048 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 09:18:19" (1/3) ... [2018-11-22 21:18:20,050 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6fafa923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 09:18:20, skipping insertion in model container [2018-11-22 21:18:20,050 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 21:18:20,050 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:19" (2/3) ... [2018-11-22 21:18:20,050 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6fafa923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 09:18:20, skipping insertion in model container [2018-11-22 21:18:20,050 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 21:18:20,050 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:18:20" (3/3) ... [2018-11-22 21:18:20,052 INFO L375 chiAutomizerObserver]: Analyzing ICFG a.01_true-termination_true-no-overflow.c [2018-11-22 21:18:20,098 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 21:18:20,099 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-22 21:18:20,099 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-22 21:18:20,099 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-22 21:18:20,099 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 21:18:20,099 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 21:18:20,099 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-22 21:18:20,099 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 21:18:20,099 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-22 21:18:20,107 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-22 21:18:20,121 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:20,121 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:20,121 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:20,127 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-22 21:18:20,127 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-22 21:18:20,127 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-22 21:18:20,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-22 21:18:20,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:20,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:20,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:20,128 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-22 21:18:20,128 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-22 21:18:20,135 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 10#L11-2true [2018-11-22 21:18:20,135 INFO L796 eck$LassoCheckResult]: Loop: 10#L11-2true assume !!(main_~x~0 > 0);main_~y~0 := 0; 5#L13-2true assume !(main_~y~0 < main_~x~0); 3#L13-3true main_~x~0 := main_~x~0 - 1; 10#L11-2true [2018-11-22 21:18:20,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:20,141 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-22 21:18:20,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:20,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:20,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:20,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:20,209 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2018-11-22 21:18:20,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:20,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:20,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:20,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:20,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:18:20,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 21:18:20,255 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-22 21:18:20,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 21:18:20,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 21:18:20,266 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-11-22 21:18:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:18:20,284 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-11-22 21:18:20,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 21:18:20,286 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2018-11-22 21:18:20,286 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-22 21:18:20,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2018-11-22 21:18:20,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-22 21:18:20,289 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-22 21:18:20,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2018-11-22 21:18:20,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-22 21:18:20,290 INFO L705 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2018-11-22 21:18:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2018-11-22 21:18:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-11-22 21:18:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-22 21:18:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2018-11-22 21:18:20,310 INFO L728 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2018-11-22 21:18:20,310 INFO L608 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2018-11-22 21:18:20,310 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-22 21:18:20,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2018-11-22 21:18:20,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-22 21:18:20,311 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:20,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:20,311 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-22 21:18:20,311 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-22 21:18:20,311 INFO L794 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 27#L11-2 [2018-11-22 21:18:20,311 INFO L796 eck$LassoCheckResult]: Loop: 27#L11-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 29#L13-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 30#L13-2 assume !(main_~y~0 < main_~x~0); 26#L13-3 main_~x~0 := main_~x~0 - 1; 27#L11-2 [2018-11-22 21:18:20,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:20,311 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-11-22 21:18:20,312 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:20,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:20,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:20,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:20,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2018-11-22 21:18:20,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:20,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:20,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:18:20,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:20,326 INFO L82 PathProgramCache]: Analyzing trace with hash 29869391, now seen corresponding path program 1 times [2018-11-22 21:18:20,327 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:20,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:20,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:20,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,396 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:20,397 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:20,397 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:20,397 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:20,398 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:18:20,398 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:20,398 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:20,398 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:20,398 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.01_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-22 21:18:20,398 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:20,398 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:20,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:20,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:20,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:20,521 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:20,522 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:20,531 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:20,531 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:20,560 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:20,560 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:20,564 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:20,564 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:20,579 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:20,579 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:20,583 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:20,583 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:20,600 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:18:20,600 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:20,618 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:18:20,619 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:20,619 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:20,619 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:20,620 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:20,620 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:18:20,620 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:20,620 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:20,620 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:20,620 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.01_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-22 21:18:20,620 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:20,620 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:20,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:20,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:20,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:20,676 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:20,679 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:18:20,680 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 [2018-11-22 21:18:20,681 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:20,682 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:20,682 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:20,682 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:20,684 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:20,685 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:20,690 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:20,690 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 [2018-11-22 21:18:20,690 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:20,691 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:20,691 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:20,691 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:20,693 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:20,693 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:20,699 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:20,699 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 [2018-11-22 21:18:20,700 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:20,700 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:18:20,700 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:20,700 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:20,701 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:20,701 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:18:20,701 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:18:20,707 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:18:20,711 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 21:18:20,711 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 21:18:20,713 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:18:20,713 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 21:18:20,713 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:18:20,713 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-22 21:18:20,714 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 21:18:20,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:20,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:20,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 21:18:20,763 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 [2018-11-22 21:18:20,764 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 3 states. [2018-11-22 21:18:20,798 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 9 states and 12 transitions. Complement of second has 4 states. [2018-11-22 21:18:20,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-22 21:18:20,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 21:18:20,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-22 21:18:20,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-22 21:18:20,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:20,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-22 21:18:20,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:20,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 8 letters. [2018-11-22 21:18:20,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:20,801 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2018-11-22 21:18:20,802 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-22 21:18:20,802 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 11 transitions. [2018-11-22 21:18:20,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-22 21:18:20,802 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-22 21:18:20,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-11-22 21:18:20,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 21:18:20,803 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-22 21:18:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-11-22 21:18:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-11-22 21:18:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-22 21:18:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-22 21:18:20,804 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-22 21:18:20,804 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-22 21:18:20,804 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-22 21:18:20,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-22 21:18:20,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-22 21:18:20,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:20,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:20,805 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-22 21:18:20,805 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-22 21:18:20,805 INFO L794 eck$LassoCheckResult]: Stem: 77#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 78#L11-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 79#L13-2 [2018-11-22 21:18:20,805 INFO L796 eck$LassoCheckResult]: Loop: 79#L13-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 79#L13-2 [2018-11-22 21:18:20,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:20,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-22 21:18:20,805 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:20,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:20,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:20,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:20,809 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2018-11-22 21:18:20,810 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:20,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:20,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:20,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:20,814 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2018-11-22 21:18:20,815 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:20,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:20,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:20,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:20,828 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:20,828 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:20,828 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:20,828 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:20,829 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:18:20,829 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:20,829 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:20,829 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:20,829 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.01_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-22 21:18:20,829 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:20,829 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:20,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:20,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:20,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:20,866 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:20,866 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:20,869 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:20,869 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:20,883 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:20,883 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:20,886 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:20,886 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:20,900 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:20,901 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:20,903 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:20,903 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:20,919 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:18:20,919 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:21,028 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:18:21,030 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:21,030 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:21,030 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:21,030 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:21,030 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:18:21,030 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:21,030 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:21,030 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:21,030 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.01_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-22 21:18:21,030 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:21,030 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:21,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:21,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:21,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:21,060 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:21,060 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:18:21,061 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 [2018-11-22 21:18:21,061 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:21,061 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:21,062 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:21,062 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:21,063 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:21,063 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:21,066 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:21,067 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 [2018-11-22 21:18:21,067 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:21,067 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:18:21,068 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:21,068 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:21,068 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:21,068 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:18:21,068 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:18:21,071 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:18:21,074 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 21:18:21,075 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 21:18:21,075 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:18:21,075 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 21:18:21,075 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:18:21,075 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-22 21:18:21,076 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 21:18:21,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:21,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:21,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:21,100 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 [2018-11-22 21:18:21,100 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2018-11-22 21:18:21,114 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 15 states and 20 transitions. Complement of second has 5 states. [2018-11-22 21:18:21,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-22 21:18:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-22 21:18:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-22 21:18:21,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2018-11-22 21:18:21,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:21,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2018-11-22 21:18:21,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:21,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-22 21:18:21,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:21,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2018-11-22 21:18:21,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-22 21:18:21,116 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 15 transitions. [2018-11-22 21:18:21,116 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-22 21:18:21,117 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-22 21:18:21,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2018-11-22 21:18:21,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 21:18:21,117 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2018-11-22 21:18:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2018-11-22 21:18:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2018-11-22 21:18:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-22 21:18:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-11-22 21:18:21,118 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-22 21:18:21,118 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-22 21:18:21,118 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-22 21:18:21,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-11-22 21:18:21,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-22 21:18:21,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:21,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:21,119 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-22 21:18:21,119 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-22 21:18:21,119 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 129#L11-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 131#L13-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 132#L13-2 assume !(main_~y~0 < main_~x~0); 126#L13-3 main_~x~0 := main_~x~0 - 1; 127#L11-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 130#L13-2 [2018-11-22 21:18:21,120 INFO L796 eck$LassoCheckResult]: Loop: 130#L13-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 130#L13-2 [2018-11-22 21:18:21,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:21,120 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2018-11-22 21:18:21,120 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:21,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:21,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:21,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:21,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:21,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:18:21,152 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 21:18:21,158 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 21:18:21,176 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-22 21:18:21,176 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 21:18:21,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:21,199 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 21:18:21,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-22 21:18:21,199 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-22 21:18:21,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:21,199 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2018-11-22 21:18:21,199 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:21,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:21,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:21,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:18:21,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:21,210 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:21,210 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:21,210 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:21,210 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:21,211 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:18:21,211 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:21,211 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:21,211 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:21,211 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.01_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-22 21:18:21,211 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:21,211 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:21,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:21,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:21,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:21,244 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:21,244 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:21,246 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:21,246 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:21,261 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:21,261 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:21,265 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:21,266 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee48f898-b8c6-4505-ac9f-b43dfd5d8eee/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 [2018-11-22 21:18:21,289 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:18:21,289 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:21,379 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:18:21,380 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:21,380 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:21,380 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:21,380 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:21,381 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:18:21,381 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:21,381 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:21,381 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:21,381 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.01_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-22 21:18:21,381 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:21,381 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:21,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:21,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:21,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:21,415 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:21,416 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:18:21,416 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 [2018-11-22 21:18:21,417 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:21,417 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:21,417 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:21,417 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:21,418 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:21,418 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:21,423 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:21,423 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 [2018-11-22 21:18:21,424 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:21,424 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:18:21,424 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:21,424 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:21,424 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:21,425 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:18:21,425 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:18:21,428 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:18:21,431 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-22 21:18:21,431 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 21:18:21,432 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:18:21,432 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 21:18:21,432 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:18:21,432 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-22 21:18:21,433 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 21:18:21,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:21,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:21,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:21,453 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 [2018-11-22 21:18:21,453 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-22 21:18:21,461 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2018-11-22 21:18:21,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-22 21:18:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-22 21:18:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-22 21:18:21,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-22 21:18:21,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:21,462 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-22 21:18:21,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:21,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:21,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:21,483 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-22 21:18:21,483 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-22 21:18:21,493 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2018-11-22 21:18:21,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-22 21:18:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-22 21:18:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-22 21:18:21,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-22 21:18:21,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:21,495 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-22 21:18:21,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:21,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:21,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:21,521 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-22 21:18:21,521 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-22 21:18:21,529 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 10 states and 12 transitions. Complement of second has 4 states. [2018-11-22 21:18:21,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-22 21:18:21,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-22 21:18:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-22 21:18:21,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-22 21:18:21,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:21,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-22 21:18:21,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:21,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-22 21:18:21,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:21,531 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2018-11-22 21:18:21,532 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-22 21:18:21,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2018-11-22 21:18:21,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-22 21:18:21,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-22 21:18:21,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-22 21:18:21,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-22 21:18:21,532 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:18:21,532 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:18:21,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 21:18:21,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-22 21:18:21,533 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2018-11-22 21:18:21,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:18:21,533 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-22 21:18:21,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 21:18:21,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-22 21:18:21,533 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-22 21:18:21,534 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 21:18:21,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-22 21:18:21,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-22 21:18:21,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-22 21:18:21,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-22 21:18:21,534 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:18:21,534 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:18:21,534 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:18:21,534 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-22 21:18:21,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-22 21:18:21,534 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-22 21:18:21,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-22 21:18:21,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.11 09:18:21 BoogieIcfgContainer [2018-11-22 21:18:21,539 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-22 21:18:21,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 21:18:21,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 21:18:21,540 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 21:18:21,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:18:20" (3/4) ... [2018-11-22 21:18:21,542 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-22 21:18:21,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 21:18:21,543 INFO L168 Benchmark]: Toolchain (without parser) took 1853.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 959.2 MB in the beginning and 921.7 MB in the end (delta: 37.5 MB). Peak memory consumption was 174.4 MB. Max. memory is 11.5 GB. [2018-11-22 21:18:21,544 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:18:21,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.28 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:18:21,544 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.26 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:18:21,545 INFO L168 Benchmark]: Boogie Preprocessor took 11.21 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:18:21,545 INFO L168 Benchmark]: RCFGBuilder took 181.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:18:21,546 INFO L168 Benchmark]: BuchiAutomizer took 1495.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 921.7 MB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 11.5 GB. [2018-11-22 21:18:21,546 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 1.2 GB. Free memory is still 921.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:18:21,548 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.28 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.26 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.21 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 181.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1495.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 921.7 MB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.93 ms. Allocated memory is still 1.2 GB. Free memory is still 921.7 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function x + -1 * y and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 20 SDtfs, 14 SDslu, 3 SDs, 0 SdLazy, 42 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp95 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 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...