./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.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/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/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 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:36:17,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:36:17,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:36:17,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:36:17,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:36:17,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:36:17,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:36:17,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:36:17,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:36:17,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:36:17,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:36:17,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:36:17,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:36:17,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:36:17,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:36:17,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:36:17,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:36:17,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:36:17,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:36:17,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:36:17,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:36:17,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:36:17,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:36:17,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:36:17,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:36:17,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:36:17,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:36:17,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:36:17,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:36:17,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:36:17,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:36:17,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:36:17,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:36:17,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:36:17,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:36:17,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:36:17,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:36:17,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:36:17,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:36:17,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:36:17,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:36:17,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 23:36:17,632 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:36:17,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:36:17,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:36:17,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:36:17,645 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:36:17,646 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:36:17,646 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:36:17,646 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:36:17,646 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:36:17,647 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:36:17,647 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:36:17,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:36:17,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:36:17,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:36:17,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:36:17,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:36:17,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:36:17,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:36:17,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:36:17,649 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:36:17,649 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:36:17,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:36:17,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:36:17,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:36:17,651 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:36:17,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:36:17,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:36:17,652 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:36:17,653 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:36:17,655 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/run_dir_f734f587-d870-4970-8881-635319f44be9/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 -> 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 [2019-11-15 23:36:17,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:36:17,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:36:17,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:36:17,706 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:36:17,707 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:36:17,708 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2019-11-15 23:36:17,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/data/e5077e7bb/473e0a1b2caa471884b25190417cad7b/FLAG8ddbf56c8 [2019-11-15 23:36:18,166 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:36:18,167 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2019-11-15 23:36:18,172 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/data/e5077e7bb/473e0a1b2caa471884b25190417cad7b/FLAG8ddbf56c8 [2019-11-15 23:36:18,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/data/e5077e7bb/473e0a1b2caa471884b25190417cad7b [2019-11-15 23:36:18,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:36:18,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:36:18,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:36:18,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:36:18,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:36:18,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:36:18" (1/1) ... [2019-11-15 23:36:18,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2fc858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18, skipping insertion in model container [2019-11-15 23:36:18,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:36:18" (1/1) ... [2019-11-15 23:36:18,615 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:36:18,636 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:36:18,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:36:18,897 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:36:18,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:36:18,928 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:36:18,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18 WrapperNode [2019-11-15 23:36:18,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:36:18,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:36:18,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:36:18,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:36:18,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18" (1/1) ... [2019-11-15 23:36:18,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18" (1/1) ... [2019-11-15 23:36:18,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:36:18,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:36:18,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:36:18,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:36:18,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18" (1/1) ... [2019-11-15 23:36:18,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18" (1/1) ... [2019-11-15 23:36:18,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18" (1/1) ... [2019-11-15 23:36:18,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18" (1/1) ... [2019-11-15 23:36:18,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18" (1/1) ... [2019-11-15 23:36:18,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18" (1/1) ... [2019-11-15 23:36:18,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18" (1/1) ... [2019-11-15 23:36:18,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:36:18,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:36:18,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:36:18,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:36:18,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/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 [2019-11-15 23:36:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:36:19,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:36:19,171 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:36:19,171 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 23:36:19,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:36:19 BoogieIcfgContainer [2019-11-15 23:36:19,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:36:19,173 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:36:19,173 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:36:19,176 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:36:19,176 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:36:19,177 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:36:18" (1/3) ... [2019-11-15 23:36:19,179 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2352666e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:36:19, skipping insertion in model container [2019-11-15 23:36:19,179 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:36:19,180 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:18" (2/3) ... [2019-11-15 23:36:19,180 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2352666e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:36:19, skipping insertion in model container [2019-11-15 23:36:19,180 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:36:19,180 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:36:19" (3/3) ... [2019-11-15 23:36:19,182 INFO L371 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig1.c [2019-11-15 23:36:19,226 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:36:19,226 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:36:19,227 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:36:19,227 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:36:19,227 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:36:19,227 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:36:19,227 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:36:19,228 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:36:19,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-15 23:36:19,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:36:19,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:36:19,269 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:36:19,274 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:36:19,274 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:36:19,275 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:36:19,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-15 23:36:19,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:36:19,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:36:19,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:36:19,277 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:36:19,277 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:36:19,284 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L19-2true [2019-11-15 23:36:19,284 INFO L793 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8#L19true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 6#L19-2true [2019-11-15 23:36:19,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:19,290 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-15 23:36:19,298 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:19,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890473926] [2019-11-15 23:36:19,299 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:19,299 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:19,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:19,388 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:19,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:19,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-15 23:36:19,390 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:19,390 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700088652] [2019-11-15 23:36:19,390 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:19,390 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:19,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:19,402 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:19,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:19,404 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-15 23:36:19,404 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:19,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683858336] [2019-11-15 23:36:19,404 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:19,404 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:19,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:19,416 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:19,481 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:36:19,482 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:36:19,482 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:36:19,482 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:36:19,482 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:36:19,482 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:19,482 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:36:19,483 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:36:19,483 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration1_Loop [2019-11-15 23:36:19,483 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:36:19,483 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:36:19,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:19,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:19,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:19,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:19,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:19,671 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:36:19,672 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/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 [2019-11-15 23:36:19,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:19,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:36:19,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:36:19,691 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/run_dir_f734f587-d870-4970-8881-635319f44be9/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) [2019-11-15 23:36:19,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:19,704 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:19,716 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:36:19,716 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/run_dir_f734f587-d870-4970-8881-635319f44be9/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) [2019-11-15 23:36:19,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:19,737 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/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) [2019-11-15 23:36:19,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:36:19,761 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 [2019-11-15 23:36:19,784 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:36:19,786 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:36:19,786 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:36:19,786 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:36:19,787 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:36:19,787 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:36:19,787 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:19,787 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:36:19,787 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:36:19,787 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration1_Loop [2019-11-15 23:36:19,787 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:36:19,787 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:36:19,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:19,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:19,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:19,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:19,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:19,889 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:36:19,894 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:36:19,895 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 [2019-11-15 23:36:19,897 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:19,897 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:19,897 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:19,897 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:19,902 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:36:19,902 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:36:19,910 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:36:19,911 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 [2019-11-15 23:36:19,912 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:19,912 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:19,912 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:19,912 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:19,915 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:36:19,915 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:36:19,925 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:36:19,926 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 [2019-11-15 23:36:19,927 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:19,927 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:36:19,927 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:19,928 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:19,928 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:19,929 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:36:19,929 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:36:19,935 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:36:19,939 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:36:19,939 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:36:19,941 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:36:19,941 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:36:19,942 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:36:19,942 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-15 23:36:19,945 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:36:19,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:19,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:36:19,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:19,994 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:36:19,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:20,028 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 [2019-11-15 23:36:20,029 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-11-15 23:36:20,074 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 8 states. [2019-11-15 23:36:20,074 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 [2019-11-15 23:36:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:36:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-11-15 23:36:20,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-15 23:36:20,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:20,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-15 23:36:20,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:20,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-15 23:36:20,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:20,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-11-15 23:36:20,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:36:20,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-15 23:36:20,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-15 23:36:20,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-15 23:36:20,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-15 23:36:20,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:36:20,088 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:36:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-15 23:36:20,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-15 23:36:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 23:36:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-15 23:36:20,117 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:36:20,117 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:36:20,117 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:36:20,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-15 23:36:20,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:36:20,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:36:20,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:36:20,119 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 23:36:20,119 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:36:20,120 INFO L791 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 68#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 73#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 69#L19-2 [2019-11-15 23:36:20,120 INFO L793 eck$LassoCheckResult]: Loop: 69#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 70#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 69#L19-2 [2019-11-15 23:36:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:20,120 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-15 23:36:20,121 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:20,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133259567] [2019-11-15 23:36:20,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,161 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:20,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:20,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-11-15 23:36:20,161 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:20,162 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368474546] [2019-11-15 23:36:20,162 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,162 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,172 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:20,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:20,173 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-11-15 23:36:20,173 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:20,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207504118] [2019-11-15 23:36:20,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,185 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:20,207 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:36:20,208 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:36:20,208 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:36:20,208 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:36:20,208 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:36:20,208 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:20,208 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:36:20,208 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:36:20,208 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration2_Loop [2019-11-15 23:36:20,208 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:36:20,208 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:36:20,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,297 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:36:20,297 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/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 [2019-11-15 23:36:20,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:20,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:36:20,309 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:36:20,310 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/run_dir_f734f587-d870-4970-8881-635319f44be9/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:20,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:20,325 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/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 [2019-11-15 23:36:20,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:36:20,336 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:36:20,343 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:36:20,345 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:36:20,345 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:36:20,346 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:36:20,346 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:36:20,346 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:36:20,346 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:20,346 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:36:20,346 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:36:20,346 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration2_Loop [2019-11-15 23:36:20,346 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:36:20,346 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:36:20,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,451 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:36:20,451 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:36:20,452 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 [2019-11-15 23:36:20,453 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:20,453 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:20,453 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:20,453 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:20,455 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:36:20,455 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:36:20,459 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:36:20,462 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 [2019-11-15 23:36:20,465 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:20,465 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:36:20,465 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:20,465 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:20,466 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:20,469 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:36:20,470 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:36:20,477 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:36:20,489 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:36:20,492 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:36:20,493 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:36:20,493 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:36:20,493 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:36:20,493 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-15 23:36:20,494 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:36:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:20,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:36:20,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:20,528 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:36:20,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:20,544 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 [2019-11-15 23:36:20,545 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-15 23:36:20,560 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-11-15 23:36:20,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:36:20,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:36:20,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-15 23:36:20,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-15 23:36:20,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:20,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-15 23:36:20,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:20,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-15 23:36:20,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:20,563 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-11-15 23:36:20,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:36:20,564 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-11-15 23:36:20,564 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-15 23:36:20,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-15 23:36:20,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-11-15 23:36:20,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:36:20,565 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-15 23:36:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-11-15 23:36:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-15 23:36:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-15 23:36:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-11-15 23:36:20,567 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-15 23:36:20,567 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-15 23:36:20,567 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 23:36:20,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-11-15 23:36:20,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:36:20,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:36:20,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:36:20,569 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-15 23:36:20,569 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:36:20,569 INFO L791 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 122#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 127#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 128#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 123#L19-2 [2019-11-15 23:36:20,569 INFO L793 eck$LassoCheckResult]: Loop: 123#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 124#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 123#L19-2 [2019-11-15 23:36:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:20,570 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2019-11-15 23:36:20,570 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:20,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490127003] [2019-11-15 23:36:20,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,583 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:20,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:20,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2019-11-15 23:36:20,584 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:20,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598185356] [2019-11-15 23:36:20,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,590 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:20,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:20,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2019-11-15 23:36:20,591 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:20,591 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786663081] [2019-11-15 23:36:20,591 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,591 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:20,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:20,604 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:20,625 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:36:20,625 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:36:20,626 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:36:20,626 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:36:20,626 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:36:20,626 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:20,626 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:36:20,626 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:36:20,626 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration3_Loop [2019-11-15 23:36:20,626 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:36:20,626 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:36:20,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,704 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:36:20,704 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/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 [2019-11-15 23:36:20,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:20,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:36:20,731 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:36:20,732 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:36:20,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:20,753 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:20,758 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:36:20,758 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:36:20,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:20,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:36:20,780 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:36:20,780 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:36:20,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:20,801 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:20,806 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:36:20,806 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:20,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:20,814 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:36:20,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:36:20,832 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:20,844 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:36:20,846 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:36:20,847 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:36:20,847 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:36:20,847 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:36:20,847 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:36:20,847 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:20,847 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:36:20,848 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:36:20,848 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration3_Loop [2019-11-15 23:36:20,848 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:36:20,848 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:36:20,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:20,931 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:36:20,931 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:36:20,931 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 [2019-11-15 23:36:20,932 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:20,932 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:36:20,932 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:20,932 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-15 23:36:20,933 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:20,933 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-15 23:36:20,933 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:36:20,937 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:36:20,937 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 [2019-11-15 23:36:20,938 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:20,938 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:20,938 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:20,938 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:20,940 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:36:20,940 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:36:20,944 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:36:20,945 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 [2019-11-15 23:36:20,945 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:20,945 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:36:20,946 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:20,946 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:20,946 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:20,946 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:36:20,947 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:36:20,947 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:36:20,948 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 [2019-11-15 23:36:20,948 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:20,948 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:20,949 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:20,949 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:20,950 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:36:20,950 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:36:20,953 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:36:20,954 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 [2019-11-15 23:36:20,954 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:20,954 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:36:20,955 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:20,955 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:20,955 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:20,955 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:36:20,956 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:36:20,959 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:36:20,961 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:36:20,961 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:36:20,962 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:36:20,962 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:36:20,962 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:36:20,962 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-15 23:36:20,963 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:36:20,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:20,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:36:20,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:21,003 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:36:21,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:21,016 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 [2019-11-15 23:36:21,016 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-15 23:36:21,030 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-15 23:36:21,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:36:21,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:36:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-15 23:36:21,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-15 23:36:21,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:21,032 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:36:21,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:21,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:36:21,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:21,069 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:36:21,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:21,081 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 [2019-11-15 23:36:21,081 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-15 23:36:21,092 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-15 23:36:21,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:36:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:36:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-15 23:36:21,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-15 23:36:21,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:21,095 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:36:21,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:21,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:36:21,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:21,127 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:36:21,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:21,142 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 [2019-11-15 23:36:21,142 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-15 23:36:21,161 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2019-11-15 23:36:21,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:36:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:36:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-15 23:36:21,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-15 23:36:21,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:21,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-15 23:36:21,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:21,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-15 23:36:21,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:21,163 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2019-11-15 23:36:21,164 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-15 23:36:21,165 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2019-11-15 23:36:21,165 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 23:36:21,165 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-15 23:36:21,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-11-15 23:36:21,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:36:21,165 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-15 23:36:21,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-11-15 23:36:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2019-11-15 23:36:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-15 23:36:21,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-11-15 23:36:21,167 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-15 23:36:21,167 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-15 23:36:21,167 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 23:36:21,167 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-11-15 23:36:21,167 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-15 23:36:21,167 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:36:21,168 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:36:21,168 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:36:21,168 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:36:21,168 INFO L791 eck$LassoCheckResult]: Stem: 268#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 269#L19-2 [2019-11-15 23:36:21,168 INFO L793 eck$LassoCheckResult]: Loop: 269#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 271#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 269#L19-2 [2019-11-15 23:36:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:21,169 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-15 23:36:21,169 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:21,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573585507] [2019-11-15 23:36:21,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:21,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:21,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:21,179 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:21,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2019-11-15 23:36:21,180 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:21,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182105556] [2019-11-15 23:36:21,180 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:21,180 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:21,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:21,190 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:21,190 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2019-11-15 23:36:21,190 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:21,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313312070] [2019-11-15 23:36:21,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:21,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:21,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:21,206 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:21,229 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:36:21,229 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:36:21,229 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:36:21,229 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:36:21,229 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:36:21,230 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:21,230 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:36:21,230 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:36:21,230 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration4_Loop [2019-11-15 23:36:21,230 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:36:21,230 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:36:21,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:21,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:21,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:21,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:21,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:21,311 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:36:21,311 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:21,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:21,316 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:36:21,321 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:36:21,321 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:21,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:21,349 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:36:21,353 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:36:21,353 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:36:21,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:36:21,367 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f734f587-d870-4970-8881-635319f44be9/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:36:21,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:36:21,387 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:21,394 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:36:21,397 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:36:21,397 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:36:21,397 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:36:21,397 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:36:21,397 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:36:21,397 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:36:21,397 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:36:21,397 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:36:21,397 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration4_Loop [2019-11-15 23:36:21,397 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:36:21,397 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:36:21,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:21,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:21,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:21,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:21,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:36:21,484 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:36:21,484 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:36:21,484 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 [2019-11-15 23:36:21,485 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:21,485 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:36:21,485 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:21,485 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:21,485 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:21,486 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:36:21,486 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:36:21,487 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:36:21,487 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 [2019-11-15 23:36:21,487 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:21,488 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:21,488 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:21,488 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:21,489 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:36:21,489 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:36:21,493 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:36:21,493 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 [2019-11-15 23:36:21,494 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:36:21,494 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:36:21,494 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:36:21,494 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:36:21,494 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:36:21,495 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:36:21,495 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:36:21,497 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:36:21,507 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:36:21,508 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:36:21,508 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:36:21,509 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:36:21,509 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:36:21,510 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-15 23:36:21,510 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:36:21,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:21,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:36:21,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:21,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:36:21,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:21,557 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 [2019-11-15 23:36:21,558 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-15 23:36:21,568 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2019-11-15 23:36:21,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:36:21,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:36:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-15 23:36:21,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-15 23:36:21,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:21,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-15 23:36:21,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:21,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-15 23:36:21,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:36:21,571 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2019-11-15 23:36:21,572 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:36:21,572 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2019-11-15 23:36:21,572 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:36:21,572 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:36:21,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:36:21,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:36:21,572 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:36:21,572 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:36:21,572 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:36:21,573 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 23:36:21,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:36:21,573 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:36:21,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 23:36:21,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:36:21 BoogieIcfgContainer [2019-11-15 23:36:21,582 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:36:21,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:36:21,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:36:21,583 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:36:21,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:36:19" (3/4) ... [2019-11-15 23:36:21,587 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:36:21,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:36:21,590 INFO L168 Benchmark]: Toolchain (without parser) took 2993.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.3 MB). Free memory was 946.5 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:36:21,591 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:36:21,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.3 MB). Free memory was 946.5 MB in the beginning and 1.2 GB in the end (delta: -227.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:21,596 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:36:21,597 INFO L168 Benchmark]: Boogie Preprocessor took 12.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:36:21,597 INFO L168 Benchmark]: RCFGBuilder took 202.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:21,598 INFO L168 Benchmark]: BuchiAutomizer took 2409.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:21,598 INFO L168 Benchmark]: Witness Printer took 5.14 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. [2019-11-15 23:36:21,605 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 332.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.3 MB). Free memory was 946.5 MB in the beginning and 1.2 GB in the end (delta: -227.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 202.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2409.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.14 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 19 SDslu, 7 SDs, 0 SdLazy, 35 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax168 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...