./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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 41d35d9d9785c70c81ceac96efa22b5a4097e6f4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:08:27,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:08:27,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:08:27,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:08:27,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:08:27,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:08:27,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:08:27,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:08:27,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:08:27,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:08:27,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:08:27,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:08:27,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:08:27,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:08:27,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:08:27,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:08:27,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:08:27,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:08:27,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:08:27,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:08:27,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:08:27,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:08:27,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:08:27,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:08:27,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:08:27,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:08:27,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:08:27,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:08:27,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:08:27,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:08:27,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:08:28,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:08:28,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:08:28,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:08:28,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:08:28,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:08:28,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:08:28,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:08:28,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:08:28,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:08:28,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:08:28,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 21:08:28,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:08:28,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:08:28,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:08:28,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:08:28,067 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:08:28,068 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 21:08:28,068 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 21:08:28,068 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 21:08:28,068 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 21:08:28,069 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 21:08:28,070 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 21:08:28,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:08:28,071 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:08:28,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:08:28,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:08:28,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 21:08:28,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 21:08:28,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 21:08:28,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:08:28,072 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 21:08:28,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:08:28,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 21:08:28,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:08:28,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:08:28,073 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 21:08:28,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:08:28,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:08:28,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:08:28,075 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 21:08:28,077 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 21:08:28,078 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41d35d9d9785c70c81ceac96efa22b5a4097e6f4 [2020-11-29 21:08:28,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:08:28,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:08:28,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:08:28,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:08:28,469 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:08:28,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2020-11-29 21:08:28,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/data/b0bf7e9b6/f226659779fb469e936d9662c61df888/FLAGf18858042 [2020-11-29 21:08:29,007 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:08:29,007 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2020-11-29 21:08:29,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/data/b0bf7e9b6/f226659779fb469e936d9662c61df888/FLAGf18858042 [2020-11-29 21:08:29,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/data/b0bf7e9b6/f226659779fb469e936d9662c61df888 [2020-11-29 21:08:29,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:08:29,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:08:29,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:08:29,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:08:29,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:08:29,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:08:29" (1/1) ... [2020-11-29 21:08:29,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59bea780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29, skipping insertion in model container [2020-11-29 21:08:29,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:08:29" (1/1) ... [2020-11-29 21:08:29,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:08:29,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:08:29,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:08:29,566 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:08:29,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:08:29,605 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:08:29,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29 WrapperNode [2020-11-29 21:08:29,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:08:29,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:08:29,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:08:29,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:08:29,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29" (1/1) ... [2020-11-29 21:08:29,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29" (1/1) ... [2020-11-29 21:08:29,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:08:29,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:08:29,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:08:29,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:08:29,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29" (1/1) ... [2020-11-29 21:08:29,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29" (1/1) ... [2020-11-29 21:08:29,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29" (1/1) ... [2020-11-29 21:08:29,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29" (1/1) ... [2020-11-29 21:08:29,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29" (1/1) ... [2020-11-29 21:08:29,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29" (1/1) ... [2020-11-29 21:08:29,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29" (1/1) ... [2020-11-29 21:08:29,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:08:29,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:08:29,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:08:29,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:08:29,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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 [2020-11-29 21:08:29,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:08:29,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:08:29,926 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:08:29,926 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 21:08:29,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:08:29 BoogieIcfgContainer [2020-11-29 21:08:29,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:08:29,929 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 21:08:29,929 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 21:08:29,932 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 21:08:29,933 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:08:29,933 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 09:08:29" (1/3) ... [2020-11-29 21:08:29,934 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a6caf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:08:29, skipping insertion in model container [2020-11-29 21:08:29,934 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:08:29,935 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:08:29" (2/3) ... [2020-11-29 21:08:29,935 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a6caf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:08:29, skipping insertion in model container [2020-11-29 21:08:29,935 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:08:29,935 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:08:29" (3/3) ... [2020-11-29 21:08:29,936 INFO L373 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig7b.c [2020-11-29 21:08:29,996 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 21:08:29,996 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 21:08:29,996 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 21:08:29,997 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:08:29,997 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:08:29,997 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 21:08:29,997 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:08:29,997 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 21:08:30,008 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 21:08:30,028 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 21:08:30,028 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:08:30,028 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:08:30,037 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 21:08:30,037 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:08:30,038 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 21:08:30,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 21:08:30,045 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 21:08:30,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:08:30,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:08:30,046 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 21:08:30,046 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:08:30,054 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L23-2true [2020-11-29 21:08:30,054 INFO L796 eck$LassoCheckResult]: Loop: 4#L23-2true assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 5#L21true assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 4#L23-2true [2020-11-29 21:08:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 21:08:30,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:30,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271142539] [2020-11-29 21:08:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:30,184 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:30,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:30,206 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:30,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-29 21:08:30,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:30,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574763746] [2020-11-29 21:08:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:30,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:30,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:30,229 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:30,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:30,231 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-29 21:08:30,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:30,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703885857] [2020-11-29 21:08:30,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:30,242 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:30,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:30,252 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:30,350 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:30,351 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:30,351 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:30,351 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:30,351 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:08:30,352 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:30,352 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:30,352 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:30,352 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration1_Loop [2020-11-29 21:08:30,353 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:30,353 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:30,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:30,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:30,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:30,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:30,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:30,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:30,690 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:30,691 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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) [2020-11-29 21:08:30,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:30,705 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:30,717 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:30,718 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:30,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:30,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:30,773 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:30,773 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:30,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:30,812 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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) [2020-11-29 21:08:30,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:08:30,846 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 [2020-11-29 21:08:30,887 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:08:30,888 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:30,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:30,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:30,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:30,888 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:08:30,889 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:30,889 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:30,889 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:30,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration1_Loop [2020-11-29 21:08:30,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:30,889 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:30,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:30,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:30,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:30,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:30,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:30,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:31,021 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:31,025 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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) [2020-11-29 21:08:31,034 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 [2020-11-29 21:08:31,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:31,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:31,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:31,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:31,047 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:31,049 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:08:31,060 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:31,083 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 [2020-11-29 21:08:31,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:31,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:31,085 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:31,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:31,094 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:08:31,095 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:08:31,103 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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 [2020-11-29 21:08:31,142 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 [2020-11-29 21:08:31,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:31,143 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:31,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:31,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:31,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:31,150 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:31,150 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:08:31,156 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:08:31,161 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:08:31,162 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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 [2020-11-29 21:08:31,185 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:08:31,185 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:08:31,186 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:08:31,186 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-29 21:08:31,212 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:08:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:31,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:31,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:31,293 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:31,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:31,333 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 [2020-11-29 21:08:31,334 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 21:08:31,415 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 37 states and 48 transitions. Complement of second has 8 states. [2020-11-29 21:08:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:08:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:08:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2020-11-29 21:08:31,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-29 21:08:31,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:31,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 21:08:31,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:31,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-29 21:08:31,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:31,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2020-11-29 21:08:31,428 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 21:08:31,432 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 13 states and 19 transitions. [2020-11-29 21:08:31,433 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 21:08:31,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-29 21:08:31,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-11-29 21:08:31,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:08:31,435 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-11-29 21:08:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-11-29 21:08:31,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-29 21:08:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 21:08:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2020-11-29 21:08:31,481 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-11-29 21:08:31,481 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-11-29 21:08:31,481 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 21:08:31,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2020-11-29 21:08:31,482 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 21:08:31,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:08:31,482 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:08:31,483 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 21:08:31,483 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 21:08:31,483 INFO L794 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 90#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 82#L21 [2020-11-29 21:08:31,484 INFO L796 eck$LassoCheckResult]: Loop: 82#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 83#L23 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 87#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 82#L21 [2020-11-29 21:08:31,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:31,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 21:08:31,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:31,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877255920] [2020-11-29 21:08:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:31,492 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:31,496 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:31,498 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:31,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:31,499 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2020-11-29 21:08:31,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:31,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441824634] [2020-11-29 21:08:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:31,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:31,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:31,515 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:31,516 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2020-11-29 21:08:31,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:31,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023364817] [2020-11-29 21:08:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:31,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:31,531 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:31,533 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:31,579 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:31,579 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:31,579 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:31,579 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:31,580 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:08:31,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:31,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:31,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:31,580 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration2_Loop [2020-11-29 21:08:31,580 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:31,580 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:31,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:31,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:31,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:31,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:31,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:31,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:31,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:31,735 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:31,735 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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) [2020-11-29 21:08:31,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:31,739 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:31,745 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:31,745 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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) [2020-11-29 21:08:31,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:31,790 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:31,794 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:31,794 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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) [2020-11-29 21:08:31,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:31,833 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 [2020-11-29 21:08:31,847 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:31,848 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/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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) [2020-11-29 21:08:31,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:31,898 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:31,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:08:31,945 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:32,036 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:08:32,050 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:32,050 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:32,050 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:32,050 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:32,050 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:08:32,050 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:32,050 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:32,051 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:32,051 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration2_Loop [2020-11-29 21:08:32,051 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:32,051 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:32,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,234 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:32,234 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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) [2020-11-29 21:08:32,250 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 [2020-11-29 21:08:32,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:32,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:32,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:32,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:32,262 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:08:32,262 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:08:32,270 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/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 [2020-11-29 21:08:32,305 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 [2020-11-29 21:08:32,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:32,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:32,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:32,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:32,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:32,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:32,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:08:32,310 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:32,358 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 [2020-11-29 21:08:32,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:32,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:32,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:32,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:32,363 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:08:32,364 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:32,369 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:32,445 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 [2020-11-29 21:08:32,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:32,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:32,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:32,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:32,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:32,448 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:32,448 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:32,453 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:08:32,456 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 21:08:32,456 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:32,462 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:08:32,462 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:08:32,462 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:08:32,463 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:32,497 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:08:32,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:32,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:32,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:32,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:32,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:32,575 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 [2020-11-29 21:08:32,576 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2020-11-29 21:08:32,632 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 31 states and 49 transitions. Complement of second has 6 states. [2020-11-29 21:08:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:08:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:08:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-29 21:08:32,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 3 letters. [2020-11-29 21:08:32,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:32,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 21:08:32,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:32,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2020-11-29 21:08:32,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:32,636 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 49 transitions. [2020-11-29 21:08:32,638 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 21:08:32,639 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 42 transitions. [2020-11-29 21:08:32,639 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-29 21:08:32,639 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-29 21:08:32,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 42 transitions. [2020-11-29 21:08:32,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:08:32,640 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 42 transitions. [2020-11-29 21:08:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 42 transitions. [2020-11-29 21:08:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-11-29 21:08:32,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 21:08:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2020-11-29 21:08:32,643 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-11-29 21:08:32,643 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-11-29 21:08:32,643 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 21:08:32,643 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 38 transitions. [2020-11-29 21:08:32,644 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 21:08:32,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:08:32,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:08:32,648 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 21:08:32,648 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 21:08:32,648 INFO L794 eck$LassoCheckResult]: Stem: 173#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 167#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 168#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 164#L23 [2020-11-29 21:08:32,648 INFO L796 eck$LassoCheckResult]: Loop: 164#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 174#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 180#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 164#L23 [2020-11-29 21:08:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:32,649 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-11-29 21:08:32,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:32,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121459885] [2020-11-29 21:08:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:32,667 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:32,674 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:32,675 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:32,676 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2020-11-29 21:08:32,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:32,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467121038] [2020-11-29 21:08:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:32,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:32,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:32,691 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:32,694 INFO L82 PathProgramCache]: Analyzing trace with hash 925834452, now seen corresponding path program 1 times [2020-11-29 21:08:32,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:32,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719867477] [2020-11-29 21:08:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:32,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:32,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:32,720 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:32,763 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:32,763 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:32,763 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:32,763 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:32,763 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:08:32,764 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:32,764 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:32,764 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:32,764 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration3_Loop [2020-11-29 21:08:32,764 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:32,764 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:32,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:32,910 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:32,910 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:32,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:32,924 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:32,928 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:32,928 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:32,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:32,958 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:32,985 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:32,985 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:33,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:33,033 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,045 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:33,045 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:33,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:33,079 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:33,079 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:33,101 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:08:33,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:33,180 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:08:33,182 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:33,182 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:33,182 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:33,182 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:33,182 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:08:33,182 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,182 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:33,182 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:33,182 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration3_Loop [2020-11-29 21:08:33,183 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:33,183 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:33,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,364 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:33,364 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:33,374 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 [2020-11-29 21:08:33,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:33,376 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:33,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:33,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:33,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:33,378 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:33,378 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,380 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:33,424 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 [2020-11-29 21:08:33,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:33,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:33,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:33,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:33,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:33,429 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:33,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,431 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:33,471 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 [2020-11-29 21:08:33,473 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:33,473 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:33,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:33,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:33,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:33,475 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:33,475 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:33,500 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 Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:33,502 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:33,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:33,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:33,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:33,503 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:33,503 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:08:33,505 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:08:33,509 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 21:08:33,510 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,524 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:08:33,524 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:08:33,525 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:08:33,525 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2020-11-29 21:08:33,557 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:08:33,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:33,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:33,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:33,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:33,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:33,616 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:08:33,617 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 38 transitions. cyclomatic complexity: 20 Second operand 4 states. [2020-11-29 21:08:33,645 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 38 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 54 states and 85 transitions. Complement of second has 7 states. [2020-11-29 21:08:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:08:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:08:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-29 21:08:33,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-29 21:08:33,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:33,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-29 21:08:33,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:33,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-29 21:08:33,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:33,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 85 transitions. [2020-11-29 21:08:33,652 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-29 21:08:33,654 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 49 states and 78 transitions. [2020-11-29 21:08:33,654 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 21:08:33,654 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 21:08:33,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 78 transitions. [2020-11-29 21:08:33,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:08:33,655 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 78 transitions. [2020-11-29 21:08:33,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 78 transitions. [2020-11-29 21:08:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-11-29 21:08:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 21:08:33,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 76 transitions. [2020-11-29 21:08:33,661 INFO L714 BuchiCegarLoop]: Abstraction has 47 states and 76 transitions. [2020-11-29 21:08:33,661 INFO L594 BuchiCegarLoop]: Abstraction has 47 states and 76 transitions. [2020-11-29 21:08:33,661 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 21:08:33,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 76 transitions. [2020-11-29 21:08:33,663 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-29 21:08:33,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:08:33,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:08:33,664 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2020-11-29 21:08:33,664 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 21:08:33,664 INFO L794 eck$LassoCheckResult]: Stem: 292#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 283#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 284#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 289#L23 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 318#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 299#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 293#L23 [2020-11-29 21:08:33,664 INFO L796 eck$LassoCheckResult]: Loop: 293#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 294#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 314#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 293#L23 [2020-11-29 21:08:33,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:33,665 INFO L82 PathProgramCache]: Analyzing trace with hash 925832530, now seen corresponding path program 2 times [2020-11-29 21:08:33,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:33,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409634385] [2020-11-29 21:08:33,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:33,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:33,702 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:33,704 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:33,716 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 2 times [2020-11-29 21:08:33,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:33,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871312756] [2020-11-29 21:08:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:33,722 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:33,726 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:33,727 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:33,728 INFO L82 PathProgramCache]: Analyzing trace with hash -803054137, now seen corresponding path program 1 times [2020-11-29 21:08:33,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:33,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127771855] [2020-11-29 21:08:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:33,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:33,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:33,759 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:33,803 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:33,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:33,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:33,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:33,803 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:08:33,803 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,803 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:33,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:33,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration4_Loop [2020-11-29 21:08:33,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:33,804 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:33,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:33,960 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:33,960 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:33,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:33,965 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:33,969 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:33,969 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:34,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:34,008 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:34,013 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:34,013 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=2, ULTIMATE.start_main_#t~nondet6=2} Honda state: {ULTIMATE.start_main_~x~0=2, ULTIMATE.start_main_#t~nondet6=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:34,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:34,054 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:34,058 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:34,058 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:34,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:34,101 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:34,105 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:34,105 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:34,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:34,131 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:34,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:08:34,185 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:34,259 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:08:34,260 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:34,260 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:34,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:34,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:34,260 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:08:34,261 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:34,261 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:34,261 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:34,261 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration4_Loop [2020-11-29 21:08:34,261 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:34,261 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:34,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:34,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:34,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:34,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:34,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:34,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:34,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:34,419 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:34,419 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:34,431 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 [2020-11-29 21:08:34,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:34,433 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:34,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:34,434 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:34,434 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:34,435 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:34,435 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:34,437 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:34,459 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 [2020-11-29 21:08:34,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:34,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:34,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:34,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:34,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:34,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:34,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:08:34,463 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:34,488 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 [2020-11-29 21:08:34,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:34,489 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:34,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:34,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:34,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:34,491 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:34,492 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:08:34,496 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:08:34,499 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:08:34,499 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:34,502 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:08:34,502 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:08:34,503 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:08:34,503 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:34,532 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:08:34,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:34,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:34,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:34,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:34,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:34,606 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:08:34,606 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40 Second operand 4 states. [2020-11-29 21:08:34,641 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40. Second operand 4 states. Result 65 states and 102 transitions. Complement of second has 7 states. [2020-11-29 21:08:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:08:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:08:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-29 21:08:34,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-29 21:08:34,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:34,643 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:08:34,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:34,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:34,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:34,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:34,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:34,709 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:08:34,709 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40 Second operand 4 states. [2020-11-29 21:08:34,771 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40. Second operand 4 states. Result 60 states and 95 transitions. Complement of second has 7 states. [2020-11-29 21:08:34,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:08:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:08:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-11-29 21:08:34,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-29 21:08:34,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:34,776 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:08:34,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:34,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:34,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:34,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:34,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:34,851 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 3 loop predicates [2020-11-29 21:08:34,851 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40 Second operand 4 states. [2020-11-29 21:08:34,881 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40. Second operand 4 states. Result 88 states and 137 transitions. Complement of second has 9 states. [2020-11-29 21:08:34,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:08:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:08:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-29 21:08:34,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-29 21:08:34,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:34,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-29 21:08:34,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:34,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 6 letters. [2020-11-29 21:08:34,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:34,885 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 137 transitions. [2020-11-29 21:08:34,888 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2020-11-29 21:08:34,890 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 66 states and 103 transitions. [2020-11-29 21:08:34,891 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-29 21:08:34,891 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 21:08:34,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 103 transitions. [2020-11-29 21:08:34,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:08:34,892 INFO L691 BuchiCegarLoop]: Abstraction has 66 states and 103 transitions. [2020-11-29 21:08:34,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 103 transitions. [2020-11-29 21:08:34,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 38. [2020-11-29 21:08:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 21:08:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-11-29 21:08:34,898 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-11-29 21:08:34,898 INFO L594 BuchiCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-11-29 21:08:34,898 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 21:08:34,898 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 61 transitions. [2020-11-29 21:08:34,900 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 21:08:34,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:08:34,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:08:34,901 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-11-29 21:08:34,901 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:08:34,901 INFO L794 eck$LassoCheckResult]: Stem: 681#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 676#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 677#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 682#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 683#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 706#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 672#L23-2 [2020-11-29 21:08:34,901 INFO L796 eck$LassoCheckResult]: Loop: 672#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 671#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 672#L23-2 [2020-11-29 21:08:34,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:34,902 INFO L82 PathProgramCache]: Analyzing trace with hash 925834450, now seen corresponding path program 1 times [2020-11-29 21:08:34,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:34,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806090501] [2020-11-29 21:08:34,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:34,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:34,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:34,918 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:34,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:34,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2020-11-29 21:08:34,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:34,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685432400] [2020-11-29 21:08:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:34,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:34,927 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:34,928 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:34,929 INFO L82 PathProgramCache]: Analyzing trace with hash 668676501, now seen corresponding path program 2 times [2020-11-29 21:08:34,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:34,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798710580] [2020-11-29 21:08:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:34,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:34,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:34,947 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:34,976 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:34,976 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:34,976 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:34,976 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:34,976 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:08:34,976 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:34,976 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:34,977 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:34,977 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration5_Loop [2020-11-29 21:08:34,977 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:34,977 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:34,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:34,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:34,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:34,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,103 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:35,103 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:35,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:35,111 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:35,111 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:35,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:35,140 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:35,140 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:35,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:35,167 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,179 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:35,180 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:35,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:35,220 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,225 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:35,225 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=7} Honda state: {ULTIMATE.start_main_#t~nondet3=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:35,257 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:08:35,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:35,312 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:08:35,313 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:35,313 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:35,314 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:35,314 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:35,314 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:08:35,314 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,314 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:35,314 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:35,314 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration5_Loop [2020-11-29 21:08:35,314 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:35,314 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:35,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,460 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:35,461 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,464 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 [2020-11-29 21:08:35,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:35,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:35,465 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:35,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:35,467 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:08:35,467 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:08:35,473 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,520 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 [2020-11-29 21:08:35,522 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:35,522 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:35,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:35,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:35,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:35,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:35,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:08:35,526 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,565 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 [2020-11-29 21:08:35,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:35,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:35,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:35,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:35,569 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:08:35,570 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:08:35,575 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,596 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 [2020-11-29 21:08:35,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:35,597 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:35,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:35,598 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 21:08:35,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:35,598 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 21:08:35,598 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:08:35,600 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,622 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 [2020-11-29 21:08:35,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:35,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:35,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:35,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:35,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:35,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:35,625 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:08:35,626 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:08:35,630 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:08:35,631 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:35,633 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:08:35,633 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:08:35,634 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:08:35,634 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,656 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:08:35,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:35,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:35,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:35,702 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:35,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:35,712 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 [2020-11-29 21:08:35,713 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 61 transitions. cyclomatic complexity: 30 Second operand 3 states. [2020-11-29 21:08:35,735 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 61 transitions. cyclomatic complexity: 30. Second operand 3 states. Result 100 states and 153 transitions. Complement of second has 5 states. [2020-11-29 21:08:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 21:08:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:08:35,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-11-29 21:08:35,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-29 21:08:35,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:35,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-29 21:08:35,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:35,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 21:08:35,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:35,737 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 100 states and 153 transitions. [2020-11-29 21:08:35,740 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 21:08:35,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 100 states to 82 states and 129 transitions. [2020-11-29 21:08:35,742 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 21:08:35,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 21:08:35,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 129 transitions. [2020-11-29 21:08:35,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:08:35,743 INFO L691 BuchiCegarLoop]: Abstraction has 82 states and 129 transitions. [2020-11-29 21:08:35,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 129 transitions. [2020-11-29 21:08:35,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 69. [2020-11-29 21:08:35,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-29 21:08:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 111 transitions. [2020-11-29 21:08:35,750 INFO L714 BuchiCegarLoop]: Abstraction has 69 states and 111 transitions. [2020-11-29 21:08:35,751 INFO L594 BuchiCegarLoop]: Abstraction has 69 states and 111 transitions. [2020-11-29 21:08:35,751 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 21:08:35,751 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states and 111 transitions. [2020-11-29 21:08:35,753 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 21:08:35,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:08:35,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:08:35,754 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2020-11-29 21:08:35,754 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:08:35,754 INFO L794 eck$LassoCheckResult]: Stem: 863#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 864#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 898#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 910#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 860#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 870#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 890#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 886#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 877#L23-2 [2020-11-29 21:08:35,754 INFO L796 eck$LassoCheckResult]: Loop: 877#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 876#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 877#L23-2 [2020-11-29 21:08:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:35,755 INFO L82 PathProgramCache]: Analyzing trace with hash 602338671, now seen corresponding path program 3 times [2020-11-29 21:08:35,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:35,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536658009] [2020-11-29 21:08:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:35,762 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:35,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:35,769 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:35,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:35,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2020-11-29 21:08:35,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:35,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126753689] [2020-11-29 21:08:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:35,774 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:35,777 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:35,778 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:35,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:35,778 INFO L82 PathProgramCache]: Analyzing trace with hash -973121806, now seen corresponding path program 4 times [2020-11-29 21:08:35,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:08:35,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72253315] [2020-11-29 21:08:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:08:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:35,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:08:35,802 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:08:35,804 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:08:35,850 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:35,850 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:35,851 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:35,851 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:35,851 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:08:35,851 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,851 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:35,851 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:35,851 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration6_Loop [2020-11-29 21:08:35,851 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:35,851 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:35,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:35,953 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:35,953 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:35,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:35,959 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:35,959 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:35,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:35,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:35,985 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:35,985 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:36,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:36,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:36,010 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:36,010 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:36,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:36,035 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:08:36,038 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:08:36,038 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=7} Honda state: {ULTIMATE.start_main_#t~nondet3=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:36,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:08:36,064 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:36,105 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:08:36,105 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:36,132 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:08:36,133 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:08:36,134 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:08:36,134 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:08:36,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:08:36,134 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:08:36,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:36,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:08:36,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:08:36,134 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration6_Loop [2020-11-29 21:08:36,134 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:08:36,134 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:08:36,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:36,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:36,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:36,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:36,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:36,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:08:36,227 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:08:36,227 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:36,229 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 [2020-11-29 21:08:36,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:36,230 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:36,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:36,231 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:36,231 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:36,231 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:36,231 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:08:36,233 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:36,260 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 [2020-11-29 21:08:36,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:36,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:36,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:36,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:36,263 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:08:36,263 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:08:36,272 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:36,310 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 [2020-11-29 21:08:36,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:36,312 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:36,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:36,312 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 21:08:36,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:36,314 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 21:08:36,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:36,316 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:36,341 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 [2020-11-29 21:08:36,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:08:36,343 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:08:36,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:08:36,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:08:36,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:08:36,344 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:08:36,344 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:08:36,346 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:08:36,350 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:08:36,350 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55c88671-e92d-42d9-9333-9f9cb37df4c0/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:08:36,363 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:08:36,363 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:08:36,363 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:08:36,363 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:08:36,398 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:08:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:36,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:36,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:36,435 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:36,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:36,444 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 [2020-11-29 21:08:36,444 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56 Second operand 3 states. [2020-11-29 21:08:36,462 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56. Second operand 3 states. Result 109 states and 164 transitions. Complement of second has 5 states. [2020-11-29 21:08:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 21:08:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:08:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-11-29 21:08:36,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-29 21:08:36,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:36,463 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:08:36,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:36,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:36,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:36,490 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:36,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:36,500 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 [2020-11-29 21:08:36,500 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56 Second operand 3 states. [2020-11-29 21:08:36,522 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56. Second operand 3 states. Result 109 states and 164 transitions. Complement of second has 5 states. [2020-11-29 21:08:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 21:08:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:08:36,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-11-29 21:08:36,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-29 21:08:36,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:36,528 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:08:36,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:08:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:36,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:08:36,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:36,564 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:08:36,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:08:36,576 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 [2020-11-29 21:08:36,576 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56 Second operand 3 states. [2020-11-29 21:08:36,623 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56. Second operand 3 states. Result 125 states and 192 transitions. Complement of second has 4 states. [2020-11-29 21:08:36,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 21:08:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:08:36,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-11-29 21:08:36,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-29 21:08:36,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:36,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-29 21:08:36,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:36,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 4 letters. [2020-11-29 21:08:36,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:08:36,631 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 192 transitions. [2020-11-29 21:08:36,633 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:08:36,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 0 states and 0 transitions. [2020-11-29 21:08:36,633 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 21:08:36,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 21:08:36,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 21:08:36,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:08:36,634 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:08:36,634 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:08:36,634 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:08:36,634 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 21:08:36,634 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:08:36,634 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:08:36,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 21:08:36,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 09:08:36 BoogieIcfgContainer [2020-11-29 21:08:36,646 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 21:08:36,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:08:36,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:08:36,647 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:08:36,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:08:29" (3/4) ... [2020-11-29 21:08:36,650 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 21:08:36,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:08:36,651 INFO L168 Benchmark]: Toolchain (without parser) took 7254.76 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 80.4 MB in the beginning and 127.5 MB in the end (delta: -47.0 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:36,652 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 64.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:08:36,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.05 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 85.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:36,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.89 ms. Allocated memory is still 107.0 MB. Free memory was 85.0 MB in the beginning and 83.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:08:36,653 INFO L168 Benchmark]: Boogie Preprocessor took 20.73 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 82.8 MB in the end (delta: 780.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:08:36,653 INFO L168 Benchmark]: RCFGBuilder took 248.54 ms. Allocated memory is still 107.0 MB. Free memory was 82.8 MB in the beginning and 73.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:36,654 INFO L168 Benchmark]: BuchiAutomizer took 6716.71 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 73.9 MB in the beginning and 128.3 MB in the end (delta: -54.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:08:36,654 INFO L168 Benchmark]: Witness Printer took 3.71 ms. Allocated memory is still 157.3 MB. Free memory was 128.3 MB in the beginning and 127.5 MB in the end (delta: 821.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:08:36,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 64.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 208.05 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 85.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.89 ms. Allocated memory is still 107.0 MB. Free memory was 85.0 MB in the beginning and 83.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.73 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 82.8 MB in the end (delta: 780.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 248.54 ms. Allocated memory is still 107.0 MB. Free memory was 82.8 MB in the beginning and 73.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6716.71 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 73.9 MB in the beginning and 128.3 MB in the end (delta: -54.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.71 ms. Allocated memory is still 157.3 MB. Free memory was 128.3 MB in the beginning and 127.5 MB in the end (delta: 821.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function z and consists of 4 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.6s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 5.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 69 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 81 SDtfs, 75 SDslu, 35 SDs, 0 SdLazy, 76 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax153 hnf100 lsp29 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 21 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...