./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.12.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_9f5d9c81-0be0-482c-b117-27542652d250/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.12.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/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 64bit --witnessprinter.graph.data.programhash f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 08:58:57,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:57,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:57,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:57,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:57,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:57,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:57,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:57,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:57,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:57,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:57,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:57,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:57,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:57,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:57,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:57,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:57,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:57,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:57,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:57,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:57,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:57,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:57,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:57,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:57,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:57,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:57,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:57,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:57,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:57,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:57,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:57,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:57,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:57,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:57,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:57,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:57,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:57,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:57,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:57,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:57,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:58:57,456 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:57,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:57,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:57,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:57,458 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:57,458 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:58:57,459 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:58:57,459 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:58:57,459 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:58:57,459 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:58:57,459 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:58:57,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:57,459 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:57,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:57,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:57,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:58:57,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:58:57,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:58:57,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:57,460 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:58:57,461 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:57,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:58:57,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:57,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:57,461 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:58:57,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:57,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:57,462 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:58:57,462 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:58:57,462 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_9f5d9c81-0be0-482c-b117-27542652d250/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff [2019-10-22 08:58:57,494 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:57,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:57,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:57,507 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:57,507 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:57,508 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.12.c [2019-10-22 08:58:57,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/bin/uautomizer/data/5d789684c/55ec713f91c6462982c3e9da6d0392c9/FLAG06a58c134 [2019-10-22 08:58:57,927 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:57,928 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/sv-benchmarks/c/termination-restricted-15/b.12.c [2019-10-22 08:58:57,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/bin/uautomizer/data/5d789684c/55ec713f91c6462982c3e9da6d0392c9/FLAG06a58c134 [2019-10-22 08:58:57,945 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/bin/uautomizer/data/5d789684c/55ec713f91c6462982c3e9da6d0392c9 [2019-10-22 08:58:57,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:57,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:57,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:57,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:57,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:57,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:57" (1/1) ... [2019-10-22 08:58:57,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb094c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:57, skipping insertion in model container [2019-10-22 08:58:57,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:57" (1/1) ... [2019-10-22 08:58:57,961 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:57,974 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:58,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:58,088 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:58,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:58,167 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:58,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58 WrapperNode [2019-10-22 08:58:58,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:58,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:58,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:58,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:58,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58" (1/1) ... [2019-10-22 08:58:58,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58" (1/1) ... [2019-10-22 08:58:58,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:58,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:58,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:58,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:58,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58" (1/1) ... [2019-10-22 08:58:58,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58" (1/1) ... [2019-10-22 08:58:58,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58" (1/1) ... [2019-10-22 08:58:58,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58" (1/1) ... [2019-10-22 08:58:58,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58" (1/1) ... [2019-10-22 08:58:58,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58" (1/1) ... [2019-10-22 08:58:58,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58" (1/1) ... [2019-10-22 08:58:58,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:58,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:58,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:58,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:58,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/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 08:58:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:58,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:58,391 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:58,391 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:58:58,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:58 BoogieIcfgContainer [2019-10-22 08:58:58,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:58,392 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:58:58,393 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:58:58,396 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:58:58,396 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:58,396 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:58:57" (1/3) ... [2019-10-22 08:58:58,397 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b8c0764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:58, skipping insertion in model container [2019-10-22 08:58:58,397 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:58,398 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:58" (2/3) ... [2019-10-22 08:58:58,398 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b8c0764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:58, skipping insertion in model container [2019-10-22 08:58:58,398 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:58,398 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:58" (3/3) ... [2019-10-22 08:58:58,400 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.12.c [2019-10-22 08:58:58,490 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:58:58,490 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:58:58,490 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:58:58,490 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:58,490 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:58,491 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:58:58,491 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:58,491 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:58:58,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:58:58,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:58,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:58,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:58,554 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:58:58,554 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:58:58,555 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:58:58,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:58:58,555 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:58,556 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:58,556 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:58,556 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:58:58,556 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:58:58,564 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L15-2true [2019-10-22 08:58:58,564 INFO L793 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(main_~x~0 > 0 || main_~y~0 > 0); 6#L12true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 8#L15-2true [2019-10-22 08:58:58,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:58,569 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:58:58,575 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:58,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246109755] [2019-10-22 08:58:58,575 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:58,576 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:58,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:58,648 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:58,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:58,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-10-22 08:58:58,649 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:58,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705847549] [2019-10-22 08:58:58,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:58,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:58,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:58,660 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:58,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:58,661 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-10-22 08:58:58,662 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:58,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848969939] [2019-10-22 08:58:58,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:58,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:58,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:58,679 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:58,725 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:58,726 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:58,726 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:58,726 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:58,726 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:58:58,726 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:58,727 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:58,727 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:58,727 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration1_Loop [2019-10-22 08:58:58,727 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:58,728 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:58,744 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 08:58:58,764 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 08:58:58,767 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 08:58:58,832 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:58,833 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/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 08:58:58,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:58,840 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:58,846 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:58,846 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/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 08:58:58,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:58,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:58,857 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:58,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/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 08:58:58,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:58,862 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:58,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:58:58,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:58,876 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:58:58,879 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:58,880 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:58,880 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:58,880 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:58,880 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:58,880 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:58,880 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:58,880 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:58,881 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration1_Loop [2019-10-22 08:58:58,881 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:58,881 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:58,887 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 08:58:58,892 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 08:58:58,896 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 08:58:58,938 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:58,943 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:58,945 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 08:58:58,946 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:58,946 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:58,947 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:58,947 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:58,951 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:58,951 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:58,964 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:58,965 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 08:58:58,968 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:58,968 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:58,968 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:58,968 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:58,970 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:58,971 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:58,994 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:59,003 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 08:58:59,004 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:59,004 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:59,004 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:59,005 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:59,005 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:59,005 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:59,006 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:59,012 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:59,026 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:58:59,026 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:58:59,028 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:59,028 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:58:59,028 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:59,029 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-10-22 08:58:59,032 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:58:59,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:59,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:59,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:59,103 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:59,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:59,106 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 08:58:59,121 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 08:58:59,122 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-10-22 08:58:59,167 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2019-10-22 08:58:59,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:58:59,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-10-22 08:58:59,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2019-10-22 08:58:59,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:59,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 08:58:59,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:59,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2019-10-22 08:58:59,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:59,176 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2019-10-22 08:58:59,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:59,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2019-10-22 08:58:59,185 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:58:59,185 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 08:58:59,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2019-10-22 08:58:59,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:58:59,186 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-10-22 08:58:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2019-10-22 08:58:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-10-22 08:58:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 08:58:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-10-22 08:58:59,212 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-10-22 08:58:59,212 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-10-22 08:58:59,213 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:58:59,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-10-22 08:58:59,213 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:59,215 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:59,215 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:59,215 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:58:59,215 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:58:59,215 INFO L791 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 68#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2019-10-22 08:58:59,216 INFO L793 eck$LassoCheckResult]: Loop: 69#L12 assume !(main_~x~0 > 0); 63#L15 assume main_~y~0 > 0;main_~y~0 := main_~y~0 - 1; 64#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2019-10-22 08:58:59,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:59,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 08:58:59,216 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:59,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102517211] [2019-10-22 08:58:59,217 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:59,217 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:59,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:59,236 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:59,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:59,238 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2019-10-22 08:58:59,238 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:59,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231157494] [2019-10-22 08:58:59,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:59,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:59,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:59,254 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:59,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:59,257 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2019-10-22 08:58:59,257 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:59,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245601888] [2019-10-22 08:58:59,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:59,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:59,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:59,281 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:59,304 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:59,304 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:59,304 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:59,304 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:59,304 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:58:59,304 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:59,304 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:59,304 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:59,304 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration2_Loop [2019-10-22 08:58:59,305 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:59,305 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:59,306 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 08:58:59,309 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 08:58:59,312 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 08:58:59,319 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 08:58:59,358 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:59,358 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:59,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:59,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:59,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:59,368 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:59,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:59,379 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:59,384 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:59,385 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/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) [2019-10-22 08:58:59,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:59,393 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f5d9c81-0be0-482c-b117-27542652d250/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) [2019-10-22 08:58:59,406 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:58:59,407 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:59,463 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:58:59,467 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:59,468 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:59,468 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:59,468 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:59,468 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:59,470 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:59,470 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:59,470 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:59,470 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration2_Loop [2019-10-22 08:58:59,470 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:59,470 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:59,471 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 08:58:59,478 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 08:58:59,484 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 08:58:59,499 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 08:58:59,550 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:59,550 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:59,551 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 08:58:59,551 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:59,552 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:59,552 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:59,552 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:59,553 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:59,554 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:59,558 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:59,559 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 08:58:59,559 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:59,559 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:59,560 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:59,560 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:59,561 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:59,561 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:59,566 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:59,567 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 08:58:59,567 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:59,567 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:59,567 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:59,568 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:59,568 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:59,568 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:59,568 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:59,574 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:59,578 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:58:59,580 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:58:59,581 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:59,581 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:58:59,581 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:59,581 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-10-22 08:58:59,582 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:58:59,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:59,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:59,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:59,614 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:58:59,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:59,644 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 08:58:59,644 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 08:58:59,644 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-10-22 08:58:59,668 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2019-10-22 08:58:59,668 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 08:58:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:58:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-10-22 08:58:59,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2019-10-22 08:58:59,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:59,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:58:59,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:59,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2019-10-22 08:58:59,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:59,670 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2019-10-22 08:58:59,671 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:59,672 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2019-10-22 08:58:59,672 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-10-22 08:58:59,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-10-22 08:58:59,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2019-10-22 08:58:59,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:58:59,672 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-10-22 08:58:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2019-10-22 08:58:59,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2019-10-22 08:58:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 08:58:59,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2019-10-22 08:58:59,676 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-10-22 08:58:59,676 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-10-22 08:58:59,676 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:58:59,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2019-10-22 08:58:59,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:59,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:59,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:59,677 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:58:59,677 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:58:59,677 INFO L791 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 153#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 163#L12 assume !(main_~x~0 > 0); 147#L15 [2019-10-22 08:58:59,677 INFO L793 eck$LassoCheckResult]: Loop: 147#L15 assume !(main_~y~0 > 0); 148#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 154#L12 assume !(main_~x~0 > 0); 147#L15 [2019-10-22 08:58:59,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:59,678 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-10-22 08:58:59,678 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:59,678 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046110166] [2019-10-22 08:58:59,678 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:59,678 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:59,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:59,684 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:59,685 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2019-10-22 08:58:59,685 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:59,685 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179183716] [2019-10-22 08:58:59,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:59,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:59,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:59,714 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 08:58:59,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179183716] [2019-10-22 08:58:59,715 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:59,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:58:59,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562266316] [2019-10-22 08:58:59,717 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:58:59,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:59,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:58:59,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:58:59,721 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-10-22 08:58:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:59,743 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2019-10-22 08:58:59,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:58:59,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2019-10-22 08:58:59,744 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:59,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-10-22 08:58:59,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:58:59,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:58:59,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:58:59,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:58:59,745 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:59,745 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:59,745 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:59,745 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:58:59,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:58:59,745 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:59,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:58:59,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:58:59 BoogieIcfgContainer [2019-10-22 08:58:59,751 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:58:59,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:59,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:59,752 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:59,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:58" (3/4) ... [2019-10-22 08:58:59,756 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:58:59,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:59,758 INFO L168 Benchmark]: Toolchain (without parser) took 1809.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 943.3 MB in the beginning and 981.7 MB in the end (delta: -38.4 MB). Peak memory consumption was 104.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:59,758 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:59,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:59,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.35 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:59,760 INFO L168 Benchmark]: Boogie Preprocessor took 13.52 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 08:58:59,760 INFO L168 Benchmark]: RCFGBuilder took 177.61 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:59,761 INFO L168 Benchmark]: BuchiAutomizer took 1358.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 981.7 MB in the end (delta: 141.3 MB). Peak memory consumption was 141.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:59,761 INFO L168 Benchmark]: Witness Printer took 4.58 ms. Allocated memory is still 1.2 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:59,764 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 218.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.35 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.52 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 177.61 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1358.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 981.7 MB in the end (delta: 141.3 MB). Peak memory consumption was 141.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.58 ms. Allocated memory is still 1.2 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 16 SDslu, 11 SDs, 0 SdLazy, 32 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...