./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/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 0455ba49274114922cfe1b7739d9cb0a89e6c868 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:57:47,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:47,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:47,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:47,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:47,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:47,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:47,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:47,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:47,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:47,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:47,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:47,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:47,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:47,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:47,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:47,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:47,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:47,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:47,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:48,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:48,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:48,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:48,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:48,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:48,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:48,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:48,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:48,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:48,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:48,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:48,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:48,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:48,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:48,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:48,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:48,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:48,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:48,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:48,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:48,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:48,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:57:48,045 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:48,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:48,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:48,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:48,047 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:48,048 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:57:48,048 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:57:48,048 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:57:48,048 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:57:48,048 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:57:48,049 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:57:48,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:48,049 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:57:48,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:48,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:48,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:57:48,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:57:48,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:57:48,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:48,051 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:57:48,051 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:48,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:57:48,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:48,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:48,052 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:57:48,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:48,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:48,053 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:57:48,054 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:57:48,054 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/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 -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2019-10-22 08:57:48,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:48,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:48,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:48,114 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:48,114 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:48,115 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2019-10-22 08:57:48,178 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/data/b64489e56/953008ae9ed74b889409ef57fd1d5920/FLAG51907fc45 [2019-10-22 08:57:48,598 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:48,599 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2019-10-22 08:57:48,605 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/data/b64489e56/953008ae9ed74b889409ef57fd1d5920/FLAG51907fc45 [2019-10-22 08:57:48,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/data/b64489e56/953008ae9ed74b889409ef57fd1d5920 [2019-10-22 08:57:48,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:48,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:48,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:48,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:48,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:48,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:48" (1/1) ... [2019-10-22 08:57:48,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bbea2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:48, skipping insertion in model container [2019-10-22 08:57:48,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:48" (1/1) ... [2019-10-22 08:57:48,957 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:48,969 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:49,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:49,122 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:49,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:49,217 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:49,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49 WrapperNode [2019-10-22 08:57:49,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:49,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:49,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:49,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:49,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:49,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:49,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:49,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:49,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:49,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:49,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:49,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:49,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:49,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:49,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:49,456 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:49,456 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:57:49,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:49 BoogieIcfgContainer [2019-10-22 08:57:49,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:49,459 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:57:49,459 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:57:49,463 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:57:49,464 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:57:49,464 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:57:48" (1/3) ... [2019-10-22 08:57:49,465 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34c3e295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:57:49, skipping insertion in model container [2019-10-22 08:57:49,465 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:57:49,466 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (2/3) ... [2019-10-22 08:57:49,466 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34c3e295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:57:49, skipping insertion in model container [2019-10-22 08:57:49,467 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:57:49,467 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:49" (3/3) ... [2019-10-22 08:57:49,469 INFO L371 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2019-10-22 08:57:49,517 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:57:49,517 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:57:49,517 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:57:49,518 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:49,518 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:49,518 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:57:49,518 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:49,518 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:57:49,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:57:49,554 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:57:49,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:49,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:49,560 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:57:49,560 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:57:49,560 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:57:49,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:57:49,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:57:49,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:49,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:49,562 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:57:49,562 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:57:49,568 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 6#L18-2true [2019-10-22 08:57:49,568 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~y~0 >= 0); 9#L19true assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 7#L19-2true main_~x~0 := 1 + main_~x~0; 6#L18-2true [2019-10-22 08:57:49,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:49,574 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:57:49,581 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:49,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289251613] [2019-10-22 08:57:49,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:49,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:49,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:49,661 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:49,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:49,663 INFO L82 PathProgramCache]: Analyzing trace with hash 39821, now seen corresponding path program 1 times [2019-10-22 08:57:49,663 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:49,663 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938931148] [2019-10-22 08:57:49,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:49,664 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:49,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:49,680 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:49,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:49,682 INFO L82 PathProgramCache]: Analyzing trace with hash 963342, now seen corresponding path program 1 times [2019-10-22 08:57:49,682 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:49,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174410298] [2019-10-22 08:57:49,683 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:49,683 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:49,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:49,697 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:49,749 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:49,750 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:49,750 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:49,751 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:49,751 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:57:49,751 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:49,751 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:49,751 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:49,751 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2019-10-22 08:57:49,752 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:49,752 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:49,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:49,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:49,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:49,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:49,898 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:49,898 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:49,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:49,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:49,927 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:49,927 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/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) [2019-10-22 08:57:49,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:49,936 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 [2019-10-22 08:57:49,941 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:49,941 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/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) [2019-10-22 08:57:49,950 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:49,950 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/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:57:50,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:50,001 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 [2019-10-22 08:57:50,025 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:50,025 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=1}, {ULTIMATE.start_main_~y~0=0}, {ULTIMATE.start_main_~y~0=0}] Lambdas: [1, 7, 7] Nus: [1, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:50,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:50,033 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:57:50,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:50,045 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:50,055 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:57:50,060 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:50,060 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:50,060 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:50,060 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:50,060 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:57:50,060 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:50,060 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:50,061 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:50,061 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2019-10-22 08:57:50,061 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:50,061 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:50,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,166 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:50,172 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:57:50,173 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:57:50,175 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:50,176 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:50,176 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:50,176 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:50,181 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:57:50,181 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:57:50,188 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:57:50,189 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:57:50,190 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:50,190 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:50,190 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:50,190 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:50,193 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:57:50,193 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:57:50,202 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:57:50,202 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:57:50,203 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:50,204 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:50,204 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:50,204 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:50,204 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:50,205 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:50,205 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:50,216 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:57:50,216 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:57:50,217 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:50,217 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:50,217 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:50,217 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:50,218 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:50,218 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:50,219 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:50,240 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:57:50,245 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:57:50,245 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:57:50,255 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:57:50,256 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:57:50,256 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:57:50,263 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 101 Supporting invariants [] [2019-10-22 08:57:50,267 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:57:50,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:50,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:50,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:50,332 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:50,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:50,373 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:57:50,374 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2019-10-22 08:57:50,421 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 25 states and 35 transitions. Complement of second has 7 states. [2019-10-22 08:57:50,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 08:57:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:57:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-10-22 08:57:50,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2019-10-22 08:57:50,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:50,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 08:57:50,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:50,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2019-10-22 08:57:50,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:50,429 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 35 transitions. [2019-10-22 08:57:50,434 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:57:50,438 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 11 states and 14 transitions. [2019-10-22 08:57:50,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:57:50,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 08:57:50,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2019-10-22 08:57:50,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:57:50,441 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-10-22 08:57:50,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2019-10-22 08:57:50,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-10-22 08:57:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 08:57:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-10-22 08:57:50,473 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-10-22 08:57:50,473 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-10-22 08:57:50,473 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:57:50,473 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-10-22 08:57:50,474 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:57:50,474 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:50,474 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:50,474 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:57:50,474 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:57:50,475 INFO L791 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 77#L18-2 assume !!(main_~y~0 >= 0); 73#L19 [2019-10-22 08:57:50,475 INFO L793 eck$LassoCheckResult]: Loop: 73#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 78#L19-2 main_~x~0 := 1 + main_~x~0; 72#L18-2 assume !!(main_~y~0 >= 0); 73#L19 [2019-10-22 08:57:50,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:50,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 08:57:50,476 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:50,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368474546] [2019-10-22 08:57:50,476 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:50,476 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:50,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:50,485 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:50,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:50,486 INFO L82 PathProgramCache]: Analyzing trace with hash 44743, now seen corresponding path program 1 times [2019-10-22 08:57:50,486 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:50,486 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207504118] [2019-10-22 08:57:50,486 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:50,486 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:50,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:50,503 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:50,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:50,504 INFO L82 PathProgramCache]: Analyzing trace with hash 29865534, now seen corresponding path program 1 times [2019-10-22 08:57:50,504 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:50,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69924847] [2019-10-22 08:57:50,505 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:50,505 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:50,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:50,542 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69924847] [2019-10-22 08:57:50,543 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:50,543 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:57:50,543 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062441958] [2019-10-22 08:57:50,564 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:50,564 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:50,564 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:50,564 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:50,565 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:57:50,565 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:50,565 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:50,565 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:50,565 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2019-10-22 08:57:50,565 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:50,565 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:50,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,644 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:50,644 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:50,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:50,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:50,651 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:50,652 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:50,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:50,657 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:50,660 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:50,661 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:50,672 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:50,672 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:50,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:50,696 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:50,709 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:50,710 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=51} Honda state: {ULTIMATE.start_main_~x~0=51} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/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) [2019-10-22 08:57:50,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:50,721 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/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) [2019-10-22 08:57:50,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:50,737 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:50,775 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:57:50,778 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:50,778 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:50,778 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:50,778 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:50,779 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:57:50,779 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:50,779 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:50,779 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:50,783 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2019-10-22 08:57:50,783 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:50,783 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:50,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:50,882 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:50,882 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:57:50,883 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:57:50,884 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:50,884 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:50,884 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:50,884 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:50,886 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:57:50,886 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:57:50,893 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:57:50,896 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:57:50,898 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:50,898 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:50,898 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:50,899 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:50,900 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:50,901 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:50,901 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:50,906 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:57:50,907 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:57:50,912 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:50,912 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:50,912 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:50,912 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:50,917 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:57:50,918 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:57:50,928 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:57:50,928 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:57:50,929 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:50,929 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:50,930 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:50,930 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:50,930 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:50,931 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:50,931 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:50,938 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:57:50,945 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:57:50,945 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:57:50,946 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:57:50,946 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:57:50,946 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:57:50,947 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-10-22 08:57:50,949 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:57:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:50,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:50,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:50,982 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:50,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,006 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:57:51,007 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 08:57:51,038 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 21 states and 26 transitions. Complement of second has 5 states. [2019-10-22 08:57:51,040 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 [2019-10-22 08:57:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:57:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 08:57:51,041 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 3 letters. [2019-10-22 08:57:51,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:51,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:57:51,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:51,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 6 letters. [2019-10-22 08:57:51,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:51,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2019-10-22 08:57:51,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:57:51,044 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 13 states and 16 transitions. [2019-10-22 08:57:51,044 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:57:51,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:57:51,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2019-10-22 08:57:51,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:57:51,045 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-10-22 08:57:51,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2019-10-22 08:57:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2019-10-22 08:57:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 08:57:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-10-22 08:57:51,047 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-10-22 08:57:51,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:51,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:51,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:51,053 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2019-10-22 08:57:51,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:51,067 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-10-22 08:57:51,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:51,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-10-22 08:57:51,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:57:51,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2019-10-22 08:57:51,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:57:51,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:57:51,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2019-10-22 08:57:51,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:57:51,071 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-10-22 08:57:51,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2019-10-22 08:57:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-10-22 08:57:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 08:57:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-10-22 08:57:51,072 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-10-22 08:57:51,072 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-10-22 08:57:51,073 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:57:51,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-10-22 08:57:51,074 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:57:51,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:51,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:51,075 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-10-22 08:57:51,076 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:57:51,076 INFO L791 eck$LassoCheckResult]: Stem: 166#ULTIMATE.startENTRY havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 162#L18-2 assume !!(main_~y~0 >= 0); 163#L19 assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 171#L19-2 main_~x~0 := 1 + main_~x~0; 172#L18-2 assume !!(main_~y~0 >= 0); 170#L19 [2019-10-22 08:57:51,076 INFO L793 eck$LassoCheckResult]: Loop: 170#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 167#L19-2 main_~x~0 := 1 + main_~x~0; 168#L18-2 assume !!(main_~y~0 >= 0); 170#L19 [2019-10-22 08:57:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:51,076 INFO L82 PathProgramCache]: Analyzing trace with hash 29863612, now seen corresponding path program 2 times [2019-10-22 08:57:51,077 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:51,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557722133] [2019-10-22 08:57:51,077 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,077 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:51,094 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:51,094 INFO L82 PathProgramCache]: Analyzing trace with hash 44743, now seen corresponding path program 2 times [2019-10-22 08:57:51,094 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:51,095 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570284074] [2019-10-22 08:57:51,095 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,095 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:51,104 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:51,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:51,105 INFO L82 PathProgramCache]: Analyzing trace with hash 608649772, now seen corresponding path program 1 times [2019-10-22 08:57:51,105 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:51,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924657605] [2019-10-22 08:57:51,106 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,106 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:51,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924657605] [2019-10-22 08:57:51,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698318938] [2019-10-22 08:57:51,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:57:51,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,170 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:51,170 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-10-22 08:57:51,170 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790295418] [2019-10-22 08:57:51,195 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:51,196 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:51,196 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:51,196 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:51,196 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:57:51,196 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:51,196 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:51,197 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:51,197 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2019-10-22 08:57:51,197 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:51,197 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:51,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:51,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:51,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:51,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:51,279 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:51,279 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/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) [2019-10-22 08:57:51,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:51,289 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_799fb148-6e50-46d1-8868-0050b8b54acf/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 [2019-10-22 08:57:51,301 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:51,301 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:51,329 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:57:51,331 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:51,331 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:51,331 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:51,331 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:51,331 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:57:51,332 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:51,332 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:51,332 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:51,332 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2019-10-22 08:57:51,332 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:51,332 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:51,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:51,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:51,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:51,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:51,420 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:51,420 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:57:51,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:57:51,422 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:51,422 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:51,422 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:51,422 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:51,423 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:51,423 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:51,423 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:51,427 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:57:51,434 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:57:51,434 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:57:51,436 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:57:51,437 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:57:51,437 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:57:51,437 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-10-22 08:57:51,437 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:57:51,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:51,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,468 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:51,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,478 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:57:51,479 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:57:51,486 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2019-10-22 08:57:51,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-10-22 08:57:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:57:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-10-22 08:57:51,489 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:57:51,489 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:51,489 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:57:51,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:51,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,520 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:51,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,531 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:57:51,531 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:57:51,538 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2019-10-22 08:57:51,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-10-22 08:57:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:57:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-10-22 08:57:51,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:57:51,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:51,541 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:57:51,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:51,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,571 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:51,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,582 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:57:51,583 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:57:51,608 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 16 states and 19 transitions. Complement of second has 4 states. [2019-10-22 08:57:51,610 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 [2019-10-22 08:57:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:57:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-10-22 08:57:51,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:57:51,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:51,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2019-10-22 08:57:51,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:51,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2019-10-22 08:57:51,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:51,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2019-10-22 08:57:51,612 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:57:51,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2019-10-22 08:57:51,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:57:51,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:57:51,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:57:51,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:57:51,613 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:51,613 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:51,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:51,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:57:51,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:57:51,614 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-10-22 08:57:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:51,614 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-10-22 08:57:51,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:57:51,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-10-22 08:57:51,615 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:57:51,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:57:51,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:57:51,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:57:51,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:57:51,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:57:51,618 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:51,618 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:51,618 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:51,618 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:57:51,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:57:51,618 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:57:51,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:57:51,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:57:51 BoogieIcfgContainer [2019-10-22 08:57:51,629 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:57:51,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:51,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:51,630 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:51,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:49" (3/4) ... [2019-10-22 08:57:51,634 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:57:51,635 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:51,638 INFO L168 Benchmark]: Toolchain (without parser) took 2693.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.5 MB in the beginning and 886.0 MB in the end (delta: 58.6 MB). Peak memory consumption was 215.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:51,639 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:51,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -205.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:51,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:51,642 INFO L168 Benchmark]: Boogie Preprocessor took 18.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:51,643 INFO L168 Benchmark]: RCFGBuilder took 182.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:51,645 INFO L168 Benchmark]: BuchiAutomizer took 2170.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 886.0 MB in the end (delta: 245.9 MB). Peak memory consumption was 245.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:51,645 INFO L168 Benchmark]: Witness Printer took 5.89 ms. Allocated memory is still 1.2 GB. Free memory is still 886.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:51,648 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 273.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -205.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 182.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2170.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 886.0 MB in the end (delta: 245.9 MB). Peak memory consumption was 245.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.89 ms. Allocated memory is still 1.2 GB. Free memory is still 886.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 101 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 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 [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 13 SDs, 0 SdLazy, 33 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...