./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/java_Nested_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/java_Nested_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/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 0baccb6c9a05802d446420fb16b8e65dc76eab5e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:08:24,314 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:08:24,315 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:08:24,324 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:08:24,324 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:08:24,324 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:08:24,325 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:08:24,326 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:08:24,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:08:24,328 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:08:24,329 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:08:24,329 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:08:24,330 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:08:24,330 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:08:24,331 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:08:24,332 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:08:24,332 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:08:24,333 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:08:24,335 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:08:24,336 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:08:24,336 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:08:24,337 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:08:24,339 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:08:24,339 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:08:24,339 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:08:24,340 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:08:24,340 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:08:24,341 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:08:24,341 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:08:24,342 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:08:24,342 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:08:24,343 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:08:24,343 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:08:24,343 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:08:24,344 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:08:24,344 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:08:24,344 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 16:08:24,355 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:08:24,355 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:08:24,356 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:08:24,356 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:08:24,356 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 16:08:24,356 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 16:08:24,356 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 16:08:24,357 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 16:08:24,357 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 16:08:24,357 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 16:08:24,357 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 16:08:24,357 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:08:24,357 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 16:08:24,357 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:08:24,357 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:08:24,358 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 16:08:24,358 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 16:08:24,358 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 16:08:24,358 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:08:24,358 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 16:08:24,358 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:08:24,358 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 16:08:24,358 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:08:24,359 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:08:24,359 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 16:08:24,359 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:08:24,359 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 16:08:24,359 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 16:08:24,360 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 16:08:24,360 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_c064da70-cfaf-4974-906f-077cc405f9a4/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 -> 0baccb6c9a05802d446420fb16b8e65dc76eab5e [2018-11-18 16:08:24,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:08:24,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:08:24,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:08:24,394 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:08:24,395 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:08:24,395 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/java_Nested_true-termination_true-no-overflow.c [2018-11-18 16:08:24,439 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/data/bce50d939/7903f3df59d2440e93b5063f54ff96c6/FLAGddf14af47 [2018-11-18 16:08:24,839 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:08:24,839 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/sv-benchmarks/c/termination-restricted-15/java_Nested_true-termination_true-no-overflow.c [2018-11-18 16:08:24,843 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/data/bce50d939/7903f3df59d2440e93b5063f54ff96c6/FLAGddf14af47 [2018-11-18 16:08:24,852 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/data/bce50d939/7903f3df59d2440e93b5063f54ff96c6 [2018-11-18 16:08:24,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:08:24,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:08:24,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:08:24,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:08:24,858 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:08:24,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:08:24" (1/1) ... [2018-11-18 16:08:24,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22909f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24, skipping insertion in model container [2018-11-18 16:08:24,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:08:24" (1/1) ... [2018-11-18 16:08:24,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:08:24,876 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:08:24,976 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:08:24,978 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:08:24,987 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:08:24,995 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:08:24,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24 WrapperNode [2018-11-18 16:08:24,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:08:24,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:08:24,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:08:24,996 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:08:25,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24" (1/1) ... [2018-11-18 16:08:25,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24" (1/1) ... [2018-11-18 16:08:25,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:08:25,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:08:25,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:08:25,014 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:08:25,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24" (1/1) ... [2018-11-18 16:08:25,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24" (1/1) ... [2018-11-18 16:08:25,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24" (1/1) ... [2018-11-18 16:08:25,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24" (1/1) ... [2018-11-18 16:08:25,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24" (1/1) ... [2018-11-18 16:08:25,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24" (1/1) ... [2018-11-18 16:08:25,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24" (1/1) ... [2018-11-18 16:08:25,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:08:25,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:08:25,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:08:25,026 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:08:25,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:25,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:08:25,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:08:25,169 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:08:25,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:08:25 BoogieIcfgContainer [2018-11-18 16:08:25,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:08:25,169 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 16:08:25,169 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 16:08:25,171 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 16:08:25,172 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 16:08:25,172 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 04:08:24" (1/3) ... [2018-11-18 16:08:25,173 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7fb8e303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 04:08:25, skipping insertion in model container [2018-11-18 16:08:25,173 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 16:08:25,173 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:24" (2/3) ... [2018-11-18 16:08:25,173 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7fb8e303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 04:08:25, skipping insertion in model container [2018-11-18 16:08:25,173 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 16:08:25,173 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:08:25" (3/3) ... [2018-11-18 16:08:25,174 INFO L375 chiAutomizerObserver]: Analyzing ICFG java_Nested_true-termination_true-no-overflow.c [2018-11-18 16:08:25,216 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:08:25,217 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 16:08:25,217 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 16:08:25,217 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 16:08:25,217 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:08:25,217 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:08:25,217 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 16:08:25,217 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:08:25,218 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 16:08:25,226 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 16:08:25,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 16:08:25,238 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:25,238 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:25,242 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:25,242 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 16:08:25,242 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 16:08:25,242 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 16:08:25,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 16:08:25,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:25,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:25,244 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:25,244 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 16:08:25,250 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 7#L10-3true [2018-11-18 16:08:25,251 INFO L796 eck$LassoCheckResult]: Loop: 7#L10-3true assume true; 12#L10-1true assume !!(main_~i~0 < 10);main_~j~0 := 3; 13#L12-3true assume !true; 9#L12-4true main_~i~0 := 1 + main_~i~0; 7#L10-3true [2018-11-18 16:08:25,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,255 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 16:08:25,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:25,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2018-11-18 16:08:25,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:25,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:08:25,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:08:25,347 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 16:08:25,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:08:25,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:08:25,358 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-11-18 16:08:25,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:08:25,362 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-18 16:08:25,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:08:25,364 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-18 16:08:25,364 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 16:08:25,367 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-18 16:08:25,368 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 16:08:25,368 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 16:08:25,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-18 16:08:25,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:08:25,369 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 16:08:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-18 16:08:25,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-18 16:08:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-18 16:08:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-11-18 16:08:25,389 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 16:08:25,389 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 16:08:25,389 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 16:08:25,389 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-11-18 16:08:25,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 16:08:25,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:25,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:25,390 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:25,390 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 16:08:25,390 INFO L794 eck$LassoCheckResult]: Stem: 32#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 30#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 31#L10-3 [2018-11-18 16:08:25,390 INFO L796 eck$LassoCheckResult]: Loop: 31#L10-3 assume true; 36#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 35#L12-3 assume true; 33#L12-1 assume !(main_~j~0 < 12); 34#L12-4 main_~i~0 := 1 + main_~i~0; 31#L10-3 [2018-11-18 16:08:25,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,391 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-18 16:08:25,391 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:25,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,396 INFO L82 PathProgramCache]: Analyzing trace with hash 34543791, now seen corresponding path program 1 times [2018-11-18 16:08:25,396 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:25,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:08:25,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:08:25,428 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 16:08:25,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:08:25,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:08:25,428 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 3 states. [2018-11-18 16:08:25,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:08:25,436 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-11-18 16:08:25,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:08:25,437 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2018-11-18 16:08:25,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 16:08:25,438 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2018-11-18 16:08:25,438 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-11-18 16:08:25,438 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-18 16:08:25,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2018-11-18 16:08:25,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:08:25,438 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 16:08:25,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2018-11-18 16:08:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-11-18 16:08:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 16:08:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-11-18 16:08:25,440 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 16:08:25,440 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 16:08:25,440 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 16:08:25,440 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2018-11-18 16:08:25,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 16:08:25,440 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:25,440 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:25,440 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:25,440 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2018-11-18 16:08:25,441 INFO L794 eck$LassoCheckResult]: Stem: 54#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 52#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 53#L10-3 [2018-11-18 16:08:25,441 INFO L796 eck$LassoCheckResult]: Loop: 53#L10-3 assume true; 57#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 59#L12-3 assume true; 55#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 56#L12-3 assume true; 60#L12-1 assume !(main_~j~0 < 12); 58#L12-4 main_~i~0 := 1 + main_~i~0; 53#L10-3 [2018-11-18 16:08:25,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,441 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2018-11-18 16:08:25,441 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:25,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1163104599, now seen corresponding path program 1 times [2018-11-18 16:08:25,445 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,446 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:25,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:08:25,463 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:08:25,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:25,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:08:25,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-18 16:08:25,506 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 16:08:25,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 16:08:25,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 16:08:25,506 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 16:08:25,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:08:25,535 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-18 16:08:25,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 16:08:25,536 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-18 16:08:25,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 16:08:25,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2018-11-18 16:08:25,537 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 16:08:25,537 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 16:08:25,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2018-11-18 16:08:25,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:08:25,537 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-18 16:08:25,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2018-11-18 16:08:25,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-18 16:08:25,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-18 16:08:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-11-18 16:08:25,538 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-18 16:08:25,538 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-18 16:08:25,538 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 16:08:25,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2018-11-18 16:08:25,538 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 16:08:25,538 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:25,538 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:25,539 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:25,539 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1, 1] [2018-11-18 16:08:25,539 INFO L794 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 97#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 98#L10-3 [2018-11-18 16:08:25,539 INFO L796 eck$LassoCheckResult]: Loop: 98#L10-3 assume true; 102#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 104#L12-3 assume true; 100#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 101#L12-3 assume true; 105#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 107#L12-3 assume true; 106#L12-1 assume !(main_~j~0 < 12); 103#L12-4 main_~i~0 := 1 + main_~i~0; 98#L10-3 [2018-11-18 16:08:25,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,539 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2018-11-18 16:08:25,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:25,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1051972061, now seen corresponding path program 2 times [2018-11-18 16:08:25,544 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:25,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:08:25,568 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:08:25,576 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 16:08:25,581 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 16:08:25,581 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:08:25,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:08:25,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-18 16:08:25,601 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 16:08:25,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:08:25,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:08:25,602 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand 5 states. [2018-11-18 16:08:25,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:08:25,611 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-11-18 16:08:25,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:08:25,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2018-11-18 16:08:25,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-18 16:08:25,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2018-11-18 16:08:25,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-18 16:08:25,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-18 16:08:25,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2018-11-18 16:08:25,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:08:25,613 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-18 16:08:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2018-11-18 16:08:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 16:08:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 16:08:25,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-18 16:08:25,615 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-18 16:08:25,615 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-18 16:08:25,615 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 16:08:25,615 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2018-11-18 16:08:25,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-18 16:08:25,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:25,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:25,616 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:25,616 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 1, 1, 1, 1] [2018-11-18 16:08:25,616 INFO L794 eck$LassoCheckResult]: Stem: 155#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 153#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 154#L10-3 [2018-11-18 16:08:25,616 INFO L796 eck$LassoCheckResult]: Loop: 154#L10-3 assume true; 158#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 160#L12-3 assume true; 156#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 157#L12-3 assume true; 161#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 165#L12-3 assume true; 164#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 163#L12-3 assume true; 162#L12-1 assume !(main_~j~0 < 12); 159#L12-4 main_~i~0 := 1 + main_~i~0; 154#L10-3 [2018-11-18 16:08:25,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,616 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2018-11-18 16:08:25,617 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:25,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1627785443, now seen corresponding path program 3 times [2018-11-18 16:08:25,621 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:25,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:08:25,665 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:08:25,672 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 16:08:25,680 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 16:08:25,680 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:08:25,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:08:25,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 16:08:25,701 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 16:08:25,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 16:08:25,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:08:25,701 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 6 states. [2018-11-18 16:08:25,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:08:25,723 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-11-18 16:08:25,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 16:08:25,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 16 transitions. [2018-11-18 16:08:25,724 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2018-11-18 16:08:25,724 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 16 transitions. [2018-11-18 16:08:25,724 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-18 16:08:25,724 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-18 16:08:25,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 16 transitions. [2018-11-18 16:08:25,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:08:25,725 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-18 16:08:25,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 16 transitions. [2018-11-18 16:08:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-18 16:08:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 16:08:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-11-18 16:08:25,726 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-18 16:08:25,726 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-18 16:08:25,726 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 16:08:25,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2018-11-18 16:08:25,727 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2018-11-18 16:08:25,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:25,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:25,727 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:25,727 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 1, 1, 1, 1] [2018-11-18 16:08:25,727 INFO L794 eck$LassoCheckResult]: Stem: 222#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 220#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 221#L10-3 [2018-11-18 16:08:25,727 INFO L796 eck$LassoCheckResult]: Loop: 221#L10-3 assume true; 225#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 227#L12-3 assume true; 223#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 224#L12-3 assume true; 228#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 234#L12-3 assume true; 233#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 232#L12-3 assume true; 231#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 230#L12-3 assume true; 229#L12-1 assume !(main_~j~0 < 12); 226#L12-4 main_~i~0 := 1 + main_~i~0; 221#L10-3 [2018-11-18 16:08:25,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,728 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2018-11-18 16:08:25,728 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:25,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,732 INFO L82 PathProgramCache]: Analyzing trace with hash -933664361, now seen corresponding path program 4 times [2018-11-18 16:08:25,732 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,733 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:25,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:08:25,800 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:08:25,811 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 16:08:25,818 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 16:08:25,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:08:25,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,842 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:08:25,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-18 16:08:25,843 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 16:08:25,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 16:08:25,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:08:25,843 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 2 Second operand 7 states. [2018-11-18 16:08:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:08:25,857 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-11-18 16:08:25,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:08:25,858 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 18 transitions. [2018-11-18 16:08:25,858 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2018-11-18 16:08:25,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 18 transitions. [2018-11-18 16:08:25,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-18 16:08:25,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-18 16:08:25,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2018-11-18 16:08:25,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:08:25,859 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 16:08:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2018-11-18 16:08:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 16:08:25,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 16:08:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-18 16:08:25,860 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 16:08:25,861 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 16:08:25,861 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 16:08:25,861 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 18 transitions. [2018-11-18 16:08:25,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2018-11-18 16:08:25,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:25,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:25,862 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:25,862 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 1, 1, 1, 1] [2018-11-18 16:08:25,862 INFO L794 eck$LassoCheckResult]: Stem: 300#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 298#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 299#L10-3 [2018-11-18 16:08:25,862 INFO L796 eck$LassoCheckResult]: Loop: 299#L10-3 assume true; 303#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 306#L12-3 assume true; 301#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 302#L12-3 assume true; 305#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 314#L12-3 assume true; 313#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 312#L12-3 assume true; 311#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 310#L12-3 assume true; 309#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 308#L12-3 assume true; 307#L12-1 assume !(main_~j~0 < 12); 304#L12-4 main_~i~0 := 1 + main_~i~0; 299#L10-3 [2018-11-18 16:08:25,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,862 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2018-11-18 16:08:25,862 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,863 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:25,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:25,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:25,866 INFO L82 PathProgramCache]: Analyzing trace with hash 396764561, now seen corresponding path program 5 times [2018-11-18 16:08:25,866 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:25,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:25,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:25,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:08:25,926 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:08:25,932 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 16:08:25,944 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-18 16:08:25,944 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:08:25,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:25,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:08:25,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-18 16:08:25,976 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 16:08:25,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 16:08:25,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:08:25,976 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. cyclomatic complexity: 2 Second operand 8 states. [2018-11-18 16:08:26,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:08:26,004 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-11-18 16:08:26,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 16:08:26,004 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2018-11-18 16:08:26,004 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2018-11-18 16:08:26,005 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 20 transitions. [2018-11-18 16:08:26,005 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-18 16:08:26,005 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-18 16:08:26,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 20 transitions. [2018-11-18 16:08:26,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:08:26,005 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 16:08:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 20 transitions. [2018-11-18 16:08:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 16:08:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 16:08:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-18 16:08:26,006 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 16:08:26,006 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 16:08:26,006 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-18 16:08:26,006 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 20 transitions. [2018-11-18 16:08:26,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2018-11-18 16:08:26,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:26,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:26,007 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:26,007 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 1, 1, 1, 1] [2018-11-18 16:08:26,007 INFO L794 eck$LassoCheckResult]: Stem: 389#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 387#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 388#L10-3 [2018-11-18 16:08:26,007 INFO L796 eck$LassoCheckResult]: Loop: 388#L10-3 assume true; 392#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 395#L12-3 assume true; 390#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 391#L12-3 assume true; 394#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 405#L12-3 assume true; 404#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 403#L12-3 assume true; 402#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 401#L12-3 assume true; 400#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 399#L12-3 assume true; 398#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 397#L12-3 assume true; 396#L12-1 assume !(main_~j~0 < 12); 393#L12-4 main_~i~0 := 1 + main_~i~0; 388#L10-3 [2018-11-18 16:08:26,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:26,007 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2018-11-18 16:08:26,007 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:26,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:26,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:26,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:26,010 INFO L82 PathProgramCache]: Analyzing trace with hash -961295605, now seen corresponding path program 6 times [2018-11-18 16:08:26,010 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:26,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:26,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,010 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:26,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:26,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:08:26,060 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:08:26,066 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 16:08:26,073 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-18 16:08:26,074 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:08:26,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:26,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:08:26,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-18 16:08:26,097 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 16:08:26,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 16:08:26,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:08:26,098 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. cyclomatic complexity: 2 Second operand 9 states. [2018-11-18 16:08:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:08:26,112 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-11-18 16:08:26,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 16:08:26,112 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 22 transitions. [2018-11-18 16:08:26,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2018-11-18 16:08:26,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 22 transitions. [2018-11-18 16:08:26,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2018-11-18 16:08:26,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-11-18 16:08:26,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 22 transitions. [2018-11-18 16:08:26,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:08:26,113 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-18 16:08:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 22 transitions. [2018-11-18 16:08:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 16:08:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 16:08:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-18 16:08:26,114 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-18 16:08:26,114 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-18 16:08:26,114 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-18 16:08:26,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 22 transitions. [2018-11-18 16:08:26,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2018-11-18 16:08:26,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:26,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:26,115 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:26,115 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 1, 1, 1, 1] [2018-11-18 16:08:26,115 INFO L794 eck$LassoCheckResult]: Stem: 489#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 487#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 488#L10-3 [2018-11-18 16:08:26,115 INFO L796 eck$LassoCheckResult]: Loop: 488#L10-3 assume true; 492#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 495#L12-3 assume true; 490#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 491#L12-3 assume true; 494#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 507#L12-3 assume true; 506#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 505#L12-3 assume true; 504#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 503#L12-3 assume true; 502#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 501#L12-3 assume true; 500#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 499#L12-3 assume true; 498#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 497#L12-3 assume true; 496#L12-1 assume !(main_~j~0 < 12); 493#L12-4 main_~i~0 := 1 + main_~i~0; 488#L10-3 [2018-11-18 16:08:26,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:26,115 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2018-11-18 16:08:26,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:26,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:26,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:26,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:26,118 INFO L82 PathProgramCache]: Analyzing trace with hash -387057147, now seen corresponding path program 7 times [2018-11-18 16:08:26,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:26,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:26,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:26,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:26,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:08:26,196 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:08:26,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:26,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:26,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:08:26,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-18 16:08:26,246 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 16:08:26,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 16:08:26,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 16:08:26,246 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. cyclomatic complexity: 2 Second operand 10 states. [2018-11-18 16:08:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:08:26,290 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-11-18 16:08:26,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 16:08:26,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 24 transitions. [2018-11-18 16:08:26,293 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2018-11-18 16:08:26,293 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 24 transitions. [2018-11-18 16:08:26,293 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-18 16:08:26,293 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-11-18 16:08:26,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 24 transitions. [2018-11-18 16:08:26,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:08:26,294 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-18 16:08:26,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 24 transitions. [2018-11-18 16:08:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-18 16:08:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 16:08:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-11-18 16:08:26,296 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-18 16:08:26,296 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-18 16:08:26,296 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-11-18 16:08:26,296 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 24 transitions. [2018-11-18 16:08:26,296 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2018-11-18 16:08:26,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:26,297 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:26,297 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:26,297 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 1, 1, 1, 1] [2018-11-18 16:08:26,297 INFO L794 eck$LassoCheckResult]: Stem: 600#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 598#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 599#L10-3 [2018-11-18 16:08:26,297 INFO L796 eck$LassoCheckResult]: Loop: 599#L10-3 assume true; 603#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 605#L12-3 assume true; 601#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 602#L12-3 assume true; 606#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 620#L12-3 assume true; 619#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 618#L12-3 assume true; 617#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 616#L12-3 assume true; 615#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 614#L12-3 assume true; 613#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 612#L12-3 assume true; 611#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 610#L12-3 assume true; 609#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 608#L12-3 assume true; 607#L12-1 assume !(main_~j~0 < 12); 604#L12-4 main_~i~0 := 1 + main_~i~0; 599#L10-3 [2018-11-18 16:08:26,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:26,298 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2018-11-18 16:08:26,298 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:26,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:26,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:26,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:26,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1700287103, now seen corresponding path program 8 times [2018-11-18 16:08:26,301 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:26,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:26,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:26,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:26,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:08:26,369 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:08:26,382 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 16:08:26,392 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 16:08:26,392 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:08:26,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:26,422 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:08:26,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-18 16:08:26,422 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 16:08:26,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 16:08:26,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-18 16:08:26,423 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. cyclomatic complexity: 2 Second operand 11 states. [2018-11-18 16:08:26,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:08:26,453 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-18 16:08:26,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 16:08:26,453 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 26 transitions. [2018-11-18 16:08:26,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2018-11-18 16:08:26,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 25 states and 26 transitions. [2018-11-18 16:08:26,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-18 16:08:26,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2018-11-18 16:08:26,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 26 transitions. [2018-11-18 16:08:26,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:08:26,454 INFO L705 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-18 16:08:26,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 26 transitions. [2018-11-18 16:08:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-18 16:08:26,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 16:08:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-18 16:08:26,455 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-18 16:08:26,456 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-18 16:08:26,456 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-11-18 16:08:26,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 26 transitions. [2018-11-18 16:08:26,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2018-11-18 16:08:26,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:26,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:26,456 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:08:26,456 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 1, 1, 1, 1] [2018-11-18 16:08:26,456 INFO L794 eck$LassoCheckResult]: Stem: 722#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 720#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 721#L10-3 [2018-11-18 16:08:26,457 INFO L796 eck$LassoCheckResult]: Loop: 721#L10-3 assume true; 725#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 728#L12-3 assume true; 723#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 724#L12-3 assume true; 727#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 744#L12-3 assume true; 743#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 742#L12-3 assume true; 741#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 740#L12-3 assume true; 739#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 738#L12-3 assume true; 737#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 736#L12-3 assume true; 735#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 734#L12-3 assume true; 733#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 732#L12-3 assume true; 731#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 730#L12-3 assume true; 729#L12-1 assume !(main_~j~0 < 12); 726#L12-4 main_~i~0 := 1 + main_~i~0; 721#L10-3 [2018-11-18 16:08:26,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:26,457 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2018-11-18 16:08:26,457 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:26,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:26,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:26,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:26,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1888384121, now seen corresponding path program 9 times [2018-11-18 16:08:26,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:26,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:26,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:26,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:26,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1852397175, now seen corresponding path program 1 times [2018-11-18 16:08:26,474 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:26,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:26,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,475 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:26,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:26,605 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-11-18 16:08:26,628 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:08:26,628 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:08:26,628 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:08:26,628 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:08:26,628 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 16:08:26,629 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:26,629 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:08:26,629 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:08:26,629 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested_true-termination_true-no-overflow.c_Iteration11_Loop [2018-11-18 16:08:26,629 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:08:26,629 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:08:26,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:26,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:26,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:26,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:26,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:26,698 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:08:26,698 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:26,702 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:08:26,702 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:26,720 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:08:26,720 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:08:26,761 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:08:26,761 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=9}] Lambdas: [28, 28, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:26,780 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:08:26,780 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:08:26,796 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:08:26,796 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_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:26,803 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:08:26,803 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:08:26,819 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:08:26,819 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_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:26,821 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:08:26,821 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:08:26,823 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:08:26,823 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=12} Honda state: {ULTIMATE.start_main_~j~0=12} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:26,839 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:08:26,839 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:26,857 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:08:26,858 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:08:26,874 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 16:08:26,874 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:08:26,875 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:08:26,875 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:08:26,875 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:08:26,875 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 16:08:26,875 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:26,875 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:08:26,875 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:08:26,875 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested_true-termination_true-no-overflow.c_Iteration11_Loop [2018-11-18 16:08:26,875 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:08:26,875 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:08:26,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:26,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:26,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:26,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:26,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:26,925 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:08:26,929 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 16:08:26,930 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:08:26,931 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:08:26,931 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:08:26,932 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:08:26,932 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:08:26,932 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:08:26,934 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:08:26,934 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:08:26,937 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:08:26,937 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:08:26,938 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:08:26,941 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:08:26,941 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:08:26,941 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:08:26,943 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 16:08:26,943 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 16:08:26,945 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:08:26,945 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:08:26,946 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:08:26,947 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:08:26,947 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:08:26,947 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:08:26,948 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 16:08:26,948 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 16:08:26,951 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:08:26,951 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:08:26,952 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:08:26,952 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:08:26,952 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:08:26,952 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:08:26,952 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:08:26,953 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:08:26,953 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:08:26,954 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:08:26,955 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:08:26,955 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:08:26,955 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:08:26,955 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:08:26,955 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:08:26,956 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:08:26,956 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:08:26,956 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:08:26,962 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 16:08:26,964 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 16:08:26,964 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 16:08:26,966 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 16:08:26,966 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 16:08:26,966 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 16:08:26,966 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] [2018-11-18 16:08:26,967 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 16:08:27,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:27,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:27,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-18 16:08:27,024 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 16:08:27,025 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 26 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 16:08:27,045 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 26 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 48 states and 51 transitions. Complement of second has 6 states. [2018-11-18 16:08:27,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 16:08:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 16:08:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 16:08:27,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 23 letters. [2018-11-18 16:08:27,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:08:27,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 25 letters. Loop has 23 letters. [2018-11-18 16:08:27,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:08:27,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 46 letters. [2018-11-18 16:08:27,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:08:27,049 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 51 transitions. [2018-11-18 16:08:27,050 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 16:08:27,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 47 states and 50 transitions. [2018-11-18 16:08:27,051 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-18 16:08:27,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-18 16:08:27,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 50 transitions. [2018-11-18 16:08:27,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 16:08:27,051 INFO L705 BuchiCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-11-18 16:08:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 50 transitions. [2018-11-18 16:08:27,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 29. [2018-11-18 16:08:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 16:08:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-11-18 16:08:27,052 INFO L728 BuchiCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-11-18 16:08:27,052 INFO L608 BuchiCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-11-18 16:08:27,053 INFO L442 BuchiCegarLoop]: ======== Iteration 12============ [2018-11-18 16:08:27,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 32 transitions. [2018-11-18 16:08:27,053 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 16:08:27,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:27,053 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:27,053 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 16:08:27,053 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 16:08:27,053 INFO L794 eck$LassoCheckResult]: Stem: 893#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 891#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 892#L10-3 assume true; 899#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 895#L12-3 [2018-11-18 16:08:27,053 INFO L796 eck$LassoCheckResult]: Loop: 895#L12-3 assume true; 894#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 895#L12-3 [2018-11-18 16:08:27,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:27,054 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-11-18 16:08:27,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:27,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:27,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:27,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:27,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 1 times [2018-11-18 16:08:27,058 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:27,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:27,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:27,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:27,062 INFO L82 PathProgramCache]: Analyzing trace with hash 889541519, now seen corresponding path program 1 times [2018-11-18 16:08:27,062 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:27,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:27,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:27,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,082 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:08:27,082 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:08:27,082 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:08:27,082 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:08:27,082 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 16:08:27,082 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,082 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:08:27,082 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:08:27,083 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested_true-termination_true-no-overflow.c_Iteration12_Loop [2018-11-18 16:08:27,083 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:08:27,083 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:08:27,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,132 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:08:27,132 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,134 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:08:27,134 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:08:27,150 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:08:27,150 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_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,153 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:08:27,153 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,170 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:08:27,171 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:08:27,190 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 16:08:27,191 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:08:27,191 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:08:27,191 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:08:27,191 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:08:27,191 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 16:08:27,191 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,191 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:08:27,191 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:08:27,192 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested_true-termination_true-no-overflow.c_Iteration12_Loop [2018-11-18 16:08:27,192 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:08:27,192 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:08:27,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,220 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:08:27,220 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 16:08:27,221 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:08:27,221 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:08:27,221 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:08:27,221 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:08:27,221 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:08:27,222 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:08:27,222 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:08:27,222 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:08:27,223 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 16:08:27,224 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 16:08:27,224 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 16:08:27,225 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 16:08:27,225 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 16:08:27,225 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 16:08:27,225 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2018-11-18 16:08:27,225 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 16:08:27,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:27,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:27,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:27,246 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 16:08:27,246 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 32 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-18 16:08:27,258 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 32 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 73 states and 79 transitions. Complement of second has 5 states. [2018-11-18 16:08:27,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 16:08:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 16:08:27,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 16:08:27,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-18 16:08:27,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:08:27,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-18 16:08:27,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:08:27,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-18 16:08:27,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:08:27,260 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 79 transitions. [2018-11-18 16:08:27,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 16:08:27,261 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 55 states and 59 transitions. [2018-11-18 16:08:27,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 16:08:27,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 16:08:27,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 59 transitions. [2018-11-18 16:08:27,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 16:08:27,262 INFO L705 BuchiCegarLoop]: Abstraction has 55 states and 59 transitions. [2018-11-18 16:08:27,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 59 transitions. [2018-11-18 16:08:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2018-11-18 16:08:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 16:08:27,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-11-18 16:08:27,265 INFO L728 BuchiCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-11-18 16:08:27,266 INFO L608 BuchiCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-11-18 16:08:27,266 INFO L442 BuchiCegarLoop]: ======== Iteration 13============ [2018-11-18 16:08:27,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 53 transitions. [2018-11-18 16:08:27,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 16:08:27,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:08:27,266 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:08:27,267 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [10, 9, 2, 2, 1, 1, 1, 1] [2018-11-18 16:08:27,267 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 16:08:27,267 INFO L794 eck$LassoCheckResult]: Stem: 1033#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1031#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 1032#L10-3 assume true; 1038#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 1080#L12-3 assume true; 1079#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 1078#L12-3 assume true; 1076#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 1074#L12-3 assume true; 1072#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 1070#L12-3 assume true; 1068#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 1066#L12-3 assume true; 1064#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 1062#L12-3 assume true; 1060#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 1058#L12-3 assume true; 1056#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 1054#L12-3 assume true; 1052#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 1050#L12-3 assume true; 1049#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 1048#L12-3 assume true; 1044#L12-1 assume !(main_~j~0 < 12); 1042#L12-4 main_~i~0 := 1 + main_~i~0; 1039#L10-3 assume true; 1041#L10-1 assume !!(main_~i~0 < 10);main_~j~0 := 3; 1035#L12-3 [2018-11-18 16:08:27,267 INFO L796 eck$LassoCheckResult]: Loop: 1035#L12-3 assume true; 1034#L12-1 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 1035#L12-3 [2018-11-18 16:08:27,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:27,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2037224829, now seen corresponding path program 2 times [2018-11-18 16:08:27,267 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:27,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:27,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:27,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:27,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 2 times [2018-11-18 16:08:27,278 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:27,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:27,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:27,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:27,282 INFO L82 PathProgramCache]: Analyzing trace with hash -732025789, now seen corresponding path program 3 times [2018-11-18 16:08:27,282 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:08:27,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:08:27,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:08:27,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:27,311 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:08:27,311 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:08:27,311 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:08:27,311 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:08:27,311 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 16:08:27,311 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,311 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:08:27,311 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:08:27,311 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested_true-termination_true-no-overflow.c_Iteration13_Loop [2018-11-18 16:08:27,312 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:08:27,312 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:08:27,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,370 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:08:27,370 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,387 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:08:27,387 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:08:27,411 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:08:27,411 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_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,424 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:08:27,424 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,443 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:08:27,444 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:08:27,470 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:08:27,470 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,488 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:08:27,488 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c064da70-cfaf-4974-906f-077cc405f9a4/bin-2019/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,520 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:08:27,520 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:08:27,545 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 16:08:27,547 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:08:27,547 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:08:27,547 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:08:27,547 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:08:27,548 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 16:08:27,548 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:08:27,548 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:08:27,548 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:08:27,548 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested_true-termination_true-no-overflow.c_Iteration13_Loop [2018-11-18 16:08:27,548 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:08:27,548 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:08:27,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:08:27,595 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:08:27,595 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 16:08:27,596 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:08:27,596 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:08:27,596 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:08:27,596 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:08:27,596 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:08:27,597 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 16:08:27,597 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 16:08:27,599 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:08:27,600 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:08:27,600 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:08:27,600 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:08:27,600 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:08:27,600 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:08:27,600 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:08:27,601 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:08:27,601 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:08:27,602 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:08:27,602 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:08:27,603 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:08:27,603 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:08:27,603 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:08:27,603 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:08:27,603 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:08:27,603 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:08:27,603 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:08:27,605 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 16:08:27,606 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 16:08:27,606 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 16:08:27,606 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 16:08:27,606 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 16:08:27,606 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 16:08:27,606 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2018-11-18 16:08:27,607 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 16:08:27,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:27,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:27,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:27,643 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 16:08:27,643 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 16:08:27,659 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 68 states and 73 transitions. Complement of second has 5 states. [2018-11-18 16:08:27,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 16:08:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 16:08:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 16:08:27,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 27 letters. Loop has 2 letters. [2018-11-18 16:08:27,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:08:27,660 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 16:08:27,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:27,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:27,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:27,683 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 [2018-11-18 16:08:27,683 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 16:08:27,688 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 68 states and 73 transitions. Complement of second has 5 states. [2018-11-18 16:08:27,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 16:08:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 16:08:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 16:08:27,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 27 letters. Loop has 2 letters. [2018-11-18 16:08:27,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:08:27,690 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 16:08:27,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:27,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:27,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:08:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:27,710 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 [2018-11-18 16:08:27,710 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 16:08:27,716 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 76 states and 82 transitions. Complement of second has 4 states. [2018-11-18 16:08:27,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 16:08:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 16:08:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-11-18 16:08:27,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 27 letters. Loop has 2 letters. [2018-11-18 16:08:27,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:08:27,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 29 letters. Loop has 2 letters. [2018-11-18 16:08:27,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:08:27,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 27 letters. Loop has 4 letters. [2018-11-18 16:08:27,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:08:27,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 82 transitions. [2018-11-18 16:08:27,720 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 16:08:27,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 0 states and 0 transitions. [2018-11-18 16:08:27,720 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 16:08:27,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 16:08:27,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 16:08:27,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:08:27,720 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:08:27,720 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:08:27,721 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:08:27,721 INFO L442 BuchiCegarLoop]: ======== Iteration 14============ [2018-11-18 16:08:27,721 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 16:08:27,721 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 16:08:27,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 16:08:27,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 04:08:27 BoogieIcfgContainer [2018-11-18 16:08:27,725 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 16:08:27,726 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:08:27,726 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:08:27,726 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:08:27,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:08:25" (3/4) ... [2018-11-18 16:08:27,729 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 16:08:27,729 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:08:27,729 INFO L168 Benchmark]: Toolchain (without parser) took 2875.12 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 227.5 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -138.3 MB). Peak memory consumption was 89.2 MB. Max. memory is 11.5 GB. [2018-11-18 16:08:27,730 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:08:27,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.43 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:08:27,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.60 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:08:27,731 INFO L168 Benchmark]: Boogie Preprocessor took 11.34 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:08:27,731 INFO L168 Benchmark]: RCFGBuilder took 143.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -201.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:08:27,731 INFO L168 Benchmark]: BuchiAutomizer took 2556.16 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.7 MB). Peak memory consumption was 114.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:08:27,732 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:08:27,734 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.43 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.60 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.34 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 143.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -201.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2556.16 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.7 MB). Peak memory consumption was 114.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.93 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (10 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One deterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. 10 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 14 iterations. TraceHistogramMax:10. Analysis of lassos took 1.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 11. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 50 states and ocurred in iteration 12. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 90/90 HoareTripleCheckerStatistics: 117 SDtfs, 38 SDslu, 179 SDs, 0 SdLazy, 155 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI10 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax171 hnf99 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 2 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...