./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/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 32bit --witnessprinter.graph.data.programhash a881e1073186594f4727f809fbe5d917ff145543 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:58:46,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:46,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:46,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:46,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:46,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:46,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:46,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:46,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:46,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:46,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:46,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:46,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:46,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:46,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:46,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:46,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:46,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:46,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:46,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:46,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:46,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:46,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:46,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:46,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:46,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:46,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:46,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:46,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:46,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:46,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:46,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:46,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:46,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:46,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:46,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:46,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:46,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:46,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:46,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:46,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:46,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:58:46,102 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:46,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:46,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:46,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:46,114 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:46,114 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:58:46,114 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:58:46,115 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:58:46,115 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:58:46,115 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:58:46,115 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:58:46,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:46,115 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:58:46,115 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:46,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:46,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:58:46,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:46,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:58:46,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:58:46,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:58:46,116 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:58:46,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:46,117 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:58:46,117 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:46,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:58:46,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:46,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:46,118 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:58:46,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:46,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:46,118 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:58:46,119 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:58:46,122 INFO L138 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_5e92371f-693e-49df-90ee-453da3579f15/bin/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a881e1073186594f4727f809fbe5d917ff145543 [2019-10-22 08:58:46,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:46,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:46,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:46,167 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:46,168 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:46,168 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/../../sv-benchmarks/c/loop-new/nested-1.i [2019-10-22 08:58:46,216 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/data/921f38de4/50cdb07bc73b4901a309a3cc48ece29e/FLAG8bd8b154e [2019-10-22 08:58:46,598 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:46,598 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/sv-benchmarks/c/loop-new/nested-1.i [2019-10-22 08:58:46,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/data/921f38de4/50cdb07bc73b4901a309a3cc48ece29e/FLAG8bd8b154e [2019-10-22 08:58:46,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/data/921f38de4/50cdb07bc73b4901a309a3cc48ece29e [2019-10-22 08:58:46,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:46,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:46,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:46,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:46,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:46,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:46" (1/1) ... [2019-10-22 08:58:46,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68468750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46, skipping insertion in model container [2019-10-22 08:58:46,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:46" (1/1) ... [2019-10-22 08:58:46,636 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:46,651 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:46,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:46,812 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:46,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:46,901 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:46,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46 WrapperNode [2019-10-22 08:58:46,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:46,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:46,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:46,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:46,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46" (1/1) ... [2019-10-22 08:58:46,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46" (1/1) ... [2019-10-22 08:58:46,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:46,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:46,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:46,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:46,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46" (1/1) ... [2019-10-22 08:58:46,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46" (1/1) ... [2019-10-22 08:58:46,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46" (1/1) ... [2019-10-22 08:58:46,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46" (1/1) ... [2019-10-22 08:58:46,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46" (1/1) ... [2019-10-22 08:58:46,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46" (1/1) ... [2019-10-22 08:58:46,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46" (1/1) ... [2019-10-22 08:58:46,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:46,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:46,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:46,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:46,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/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 [2019-10-22 08:58:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:47,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:47,267 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:47,267 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 08:58:47,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:47 BoogieIcfgContainer [2019-10-22 08:58:47,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:47,269 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:58:47,269 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:58:47,273 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:58:47,276 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:47,276 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:58:46" (1/3) ... [2019-10-22 08:58:47,277 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@287b4165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:47, skipping insertion in model container [2019-10-22 08:58:47,278 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:47,278 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:46" (2/3) ... [2019-10-22 08:58:47,278 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@287b4165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:47, skipping insertion in model container [2019-10-22 08:58:47,278 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:47,278 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:47" (3/3) ... [2019-10-22 08:58:47,280 INFO L371 chiAutomizerObserver]: Analyzing ICFG nested-1.i [2019-10-22 08:58:47,341 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:58:47,342 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:58:47,342 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:58:47,342 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:47,342 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:47,343 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:58:47,343 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:47,343 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:58:47,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-10-22 08:58:47,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:58:47,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:47,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:47,390 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:58:47,390 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:58:47,390 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:58:47,390 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-10-22 08:58:47,391 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:58:47,391 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:47,391 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:47,392 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:58:47,392 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:58:47,399 INFO L791 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post5, main_#t~post4, main_#t~post3, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 3#L15true assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 7#L16true assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 15#L17-3true [2019-10-22 08:58:47,399 INFO L793 eck$LassoCheckResult]: Loop: 15#L17-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 4#L18-3true assume !(main_~j~0 < main_~m~0); 5#L17-2true main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 15#L17-3true [2019-10-22 08:58:47,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash 30949, now seen corresponding path program 1 times [2019-10-22 08:58:47,413 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:47,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116712320] [2019-10-22 08:58:47,414 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:47,414 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:47,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:47,513 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:47,516 INFO L82 PathProgramCache]: Analyzing trace with hash 48858, now seen corresponding path program 1 times [2019-10-22 08:58:47,517 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:47,517 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796725777] [2019-10-22 08:58:47,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:47,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:47,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:47,531 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:47,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:47,534 INFO L82 PathProgramCache]: Analyzing trace with hash 922020726, now seen corresponding path program 1 times [2019-10-22 08:58:47,534 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:47,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277845049] [2019-10-22 08:58:47,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:47,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:47,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:47,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277845049] [2019-10-22 08:58:47,618 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:47,618 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:58:47,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193033798] [2019-10-22 08:58:47,669 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:47,670 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:47,670 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:47,670 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:47,670 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:58:47,670 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:47,671 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:47,671 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:47,671 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration1_Loop [2019-10-22 08:58:47,671 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:47,671 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:47,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:47,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:47,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:47,754 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:47,755 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:47,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:47,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:47,778 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:47,778 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:47,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:47,785 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:47,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:58:47,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:47,895 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:58:47,896 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:47,896 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:47,896 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:47,896 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:47,897 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:47,897 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:47,897 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:47,897 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:47,897 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration1_Loop [2019-10-22 08:58:47,897 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:47,897 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:47,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:47,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:47,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:47,946 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:47,950 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:47,952 INFO L120 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 [2019-10-22 08:58:47,953 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:47,954 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:47,954 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:47,954 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:47,954 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:47,956 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:47,957 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:47,959 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:47,960 INFO L120 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 [2019-10-22 08:58:47,960 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:47,960 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:47,961 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:47,961 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:47,961 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:47,961 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:47,962 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:47,968 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:47,974 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:58:47,974 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:58:47,976 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:47,976 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:58:47,977 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:47,977 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:58:47,980 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:58:48,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:48,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:48,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:48,060 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:48,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:48,119 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 [2019-10-22 08:58:48,120 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 3 states. [2019-10-22 08:58:48,159 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 3 states. Result 40 states and 55 transitions. Complement of second has 7 states. [2019-10-22 08:58:48,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 08:58:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2019-10-22 08:58:48,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 3 letters. Loop has 3 letters. [2019-10-22 08:58:48,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:48,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 08:58:48,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:48,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 3 letters. Loop has 6 letters. [2019-10-22 08:58:48,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:48,166 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 55 transitions. [2019-10-22 08:58:48,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:58:48,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 11 states and 14 transitions. [2019-10-22 08:58:48,173 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 08:58:48,174 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 08:58:48,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2019-10-22 08:58:48,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:58:48,175 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-10-22 08:58:48,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2019-10-22 08:58:48,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-10-22 08:58:48,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 08:58:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-10-22 08:58:48,197 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-10-22 08:58:48,197 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:48,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:58:48,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:58:48,200 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 4 states. [2019-10-22 08:58:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:48,226 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2019-10-22 08:58:48,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:58:48,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2019-10-22 08:58:48,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:58:48,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 17 transitions. [2019-10-22 08:58:48,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-10-22 08:58:48,228 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 08:58:48,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 17 transitions. [2019-10-22 08:58:48,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:58:48,229 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-10-22 08:58:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 17 transitions. [2019-10-22 08:58:48,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2019-10-22 08:58:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 08:58:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-10-22 08:58:48,230 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-10-22 08:58:48,230 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-10-22 08:58:48,230 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:58:48,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2019-10-22 08:58:48,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:58:48,231 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:48,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:48,232 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 08:58:48,232 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:58:48,232 INFO L791 eck$LassoCheckResult]: Stem: 135#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post5, main_#t~post4, main_#t~post3, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 127#L15 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 128#L16 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 136#L17-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 129#L18-3 [2019-10-22 08:58:48,232 INFO L793 eck$LassoCheckResult]: Loop: 129#L18-3 assume !!(main_~j~0 < main_~m~0);main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 130#L18-2 main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 129#L18-3 [2019-10-22 08:58:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:48,232 INFO L82 PathProgramCache]: Analyzing trace with hash 959438, now seen corresponding path program 1 times [2019-10-22 08:58:48,233 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:48,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472973240] [2019-10-22 08:58:48,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:48,244 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:48,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:48,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1827, now seen corresponding path program 1 times [2019-10-22 08:58:48,244 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:48,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585598214] [2019-10-22 08:58:48,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,245 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:48,251 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:48,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:48,251 INFO L82 PathProgramCache]: Analyzing trace with hash 922020784, now seen corresponding path program 1 times [2019-10-22 08:58:48,252 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:48,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020873895] [2019-10-22 08:58:48,252 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,252 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:48,264 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:48,278 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:48,278 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:48,278 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:48,278 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:48,278 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:58:48,278 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:48,279 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:48,279 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:48,279 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2019-10-22 08:58:48,279 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:48,279 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:48,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,351 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:48,352 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:48,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:48,358 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:48,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:58:48,374 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:48,494 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:58:48,496 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:48,496 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:48,496 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:48,496 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:48,496 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:48,496 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:48,496 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:48,496 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:48,496 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2019-10-22 08:58:48,496 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:48,497 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:48,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,573 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:48,573 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:48,574 INFO L120 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 [2019-10-22 08:58:48,574 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:48,575 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:48,575 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:48,575 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:48,575 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:48,576 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:48,576 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:48,590 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:48,598 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:58:48,602 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:58:48,603 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:48,604 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:58:48,604 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:48,604 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-10-22 08:58:48,604 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:58:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:48,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:48,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:48,636 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:48,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:48,650 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 [2019-10-22 08:58:48,650 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 08:58:48,671 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 7 states. [2019-10-22 08:58:48,672 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 [2019-10-22 08:58:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:48,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-10-22 08:58:48,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-10-22 08:58:48,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:48,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-10-22 08:58:48,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:48,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-10-22 08:58:48,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:48,674 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-10-22 08:58:48,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:58:48,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 16 states and 20 transitions. [2019-10-22 08:58:48,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 08:58:48,675 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 08:58:48,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2019-10-22 08:58:48,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:58:48,675 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-10-22 08:58:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2019-10-22 08:58:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2019-10-22 08:58:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 08:58:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-10-22 08:58:48,677 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-10-22 08:58:48,677 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-10-22 08:58:48,677 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:58:48,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-10-22 08:58:48,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:58:48,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:48,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:48,678 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:48,678 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:58:48,678 INFO L791 eck$LassoCheckResult]: Stem: 212#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post5, main_#t~post4, main_#t~post3, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 209#L15 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 210#L16 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 213#L17-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 207#L18-3 assume !!(main_~j~0 < main_~m~0);main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 208#L18-2 main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 211#L18-3 assume !(main_~j~0 < main_~m~0); 203#L17-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 204#L17-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 205#L18-3 [2019-10-22 08:58:48,678 INFO L793 eck$LassoCheckResult]: Loop: 205#L18-3 assume !!(main_~j~0 < main_~m~0);main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 206#L18-2 main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 205#L18-3 [2019-10-22 08:58:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:48,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1605343291, now seen corresponding path program 1 times [2019-10-22 08:58:48,679 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:48,679 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535131474] [2019-10-22 08:58:48,679 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,679 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:48,717 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535131474] [2019-10-22 08:58:48,717 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778504523] [2019-10-22 08:58:48,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:48,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:48,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:48,790 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:48,790 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-10-22 08:58:48,791 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755343867] [2019-10-22 08:58:48,791 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 08:58:48,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:48,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1827, now seen corresponding path program 2 times [2019-10-22 08:58:48,791 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:48,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040736691] [2019-10-22 08:58:48,792 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,792 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:48,797 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:48,811 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:48,811 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:48,811 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:48,811 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:48,811 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:58:48,811 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:48,811 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:48,811 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:48,812 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2019-10-22 08:58:48,812 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:48,812 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:48,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,860 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:48,860 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:48,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:48,869 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e92371f-693e-49df-90ee-453da3579f15/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:48,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:58:48,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:49,083 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:58:49,087 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:49,087 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:49,087 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:49,087 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:49,087 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:49,087 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:49,088 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:49,088 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:49,088 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2019-10-22 08:58:49,088 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:49,088 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:49,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,157 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:49,158 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:49,158 INFO L120 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 [2019-10-22 08:58:49,159 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:49,159 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:49,159 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:49,159 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:49,159 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:49,160 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:49,160 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:49,176 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:49,180 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:58:49,187 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:58:49,188 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:49,188 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:58:49,188 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:49,188 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-10-22 08:58:49,189 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:58:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:49,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,236 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:49,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:49,250 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 [2019-10-22 08:58:49,250 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:58:49,272 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 19 states and 24 transitions. Complement of second has 7 states. [2019-10-22 08:58:49,273 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 [2019-10-22 08:58:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-10-22 08:58:49,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 2 letters. [2019-10-22 08:58:49,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:49,274 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:58:49,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:49,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,318 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:49,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:49,332 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:58:49,332 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:58:49,354 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 19 states and 24 transitions. Complement of second has 7 states. [2019-10-22 08:58:49,357 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 [2019-10-22 08:58:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:49,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-10-22 08:58:49,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 2 letters. [2019-10-22 08:58:49,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:49,358 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:58:49,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:49,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,397 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:49,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:49,412 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:58:49,412 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:58:49,442 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 16 states and 20 transitions. Complement of second has 6 states. [2019-10-22 08:58:49,443 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 [2019-10-22 08:58:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-10-22 08:58:49,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 2 letters. [2019-10-22 08:58:49,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:49,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 11 letters. Loop has 2 letters. [2019-10-22 08:58:49,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:49,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2019-10-22 08:58:49,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:49,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2019-10-22 08:58:49,447 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:49,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2019-10-22 08:58:49,451 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:58:49,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:58:49,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:58:49,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:58:49,452 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:49,452 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:49,452 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:49,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:58:49,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:58:49,452 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 7 states. [2019-10-22 08:58:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:49,453 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-10-22 08:58:49,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:58:49,453 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-10-22 08:58:49,453 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:49,453 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:58:49,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:58:49,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:58:49,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:58:49,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:58:49,454 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:49,454 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:49,454 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:49,454 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:58:49,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:58:49,455 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:49,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:58:49,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:58:49 BoogieIcfgContainer [2019-10-22 08:58:49,462 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:58:49,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:49,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:49,462 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:49,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:47" (3/4) ... [2019-10-22 08:58:49,466 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:58:49,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:49,468 INFO L168 Benchmark]: Toolchain (without parser) took 2848.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 946.4 MB in the beginning and 908.5 MB in the end (delta: 37.8 MB). Peak memory consumption was 170.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:49,468 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:49,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:49,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:49,470 INFO L168 Benchmark]: Boogie Preprocessor took 24.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:49,471 INFO L168 Benchmark]: RCFGBuilder took 306.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:49,471 INFO L168 Benchmark]: BuchiAutomizer took 2193.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 908.5 MB in the end (delta: 191.6 MB). Peak memory consumption was 191.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:49,472 INFO L168 Benchmark]: Witness Printer took 3.79 ms. Allocated memory is still 1.2 GB. Free memory is still 908.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:49,475 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 306.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2193.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 908.5 MB in the end (delta: 191.6 MB). Peak memory consumption was 191.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.79 ms. Allocated memory is still 1.2 GB. Free memory is still 908.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 5 locations. One deterministic module has affine ranking function m + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function m + -1 * j and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 49 SDtfs, 50 SDslu, 25 SDs, 0 SdLazy, 46 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf98 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...