./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa --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 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:59:36,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:59:36,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:59:36,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:59:36,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:59:36,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:59:36,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:59:36,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:59:36,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:59:36,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:59:36,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:59:36,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:59:36,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:59:36,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:59:36,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:59:36,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:59:36,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:59:36,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:59:36,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:59:36,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:59:36,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:59:36,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:59:36,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:59:36,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:59:36,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:59:36,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:59:36,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:59:36,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:59:36,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:59:36,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:59:36,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:59:36,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:59:36,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:59:36,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:59:36,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:59:36,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:59:36,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:59:36,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:59:36,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:59:36,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:59:36,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:59:36,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-06 20:59:36,988 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:59:36,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:59:36,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:59:36,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:59:36,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:59:36,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:59:36,990 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:59:36,991 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 20:59:36,991 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 20:59:36,991 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 20:59:36,991 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 20:59:36,991 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 20:59:36,992 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 20:59:36,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:59:36,992 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 20:59:36,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:59:36,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:59:36,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 20:59:36,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 20:59:36,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 20:59:36,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:59:36,993 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 20:59:36,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:59:36,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 20:59:36,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:59:36,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:59:36,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:59:36,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:59:36,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:59:36,996 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 20:59:36,996 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_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2021-12-06 20:59:37,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:59:37,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:59:37,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:59:37,197 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:59:37,197 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:59:37,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-12-06 20:59:37,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/data/e4c0258d8/54a52429e0ed428ab53049cf4410dc80/FLAG1477dd070 [2021-12-06 20:59:37,599 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:59:37,599 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-12-06 20:59:37,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/data/e4c0258d8/54a52429e0ed428ab53049cf4410dc80/FLAG1477dd070 [2021-12-06 20:59:37,613 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/data/e4c0258d8/54a52429e0ed428ab53049cf4410dc80 [2021-12-06 20:59:37,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:59:37,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:59:37,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:59:37,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:59:37,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:59:37,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108ad83c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37, skipping insertion in model container [2021-12-06 20:59:37,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:59:37,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:59:37,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:59:37,742 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:59:37,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:59:37,767 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:59:37,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37 WrapperNode [2021-12-06 20:59:37,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:59:37,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:59:37,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:59:37,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:59:37,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,789 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2021-12-06 20:59:37,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:59:37,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:59:37,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:59:37,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:59:37,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:59:37,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:59:37,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:59:37,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:59:37,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37" (1/1) ... [2021-12-06 20:59:37,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:37,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:37,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:37,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 20:59:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:59:37,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:59:37,909 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:59:37,911 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:59:37,972 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:59:37,979 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:59:37,979 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 20:59:37,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:59:37 BoogieIcfgContainer [2021-12-06 20:59:37,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:59:37,982 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 20:59:37,982 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 20:59:37,986 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 20:59:37,987 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 20:59:37,987 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 08:59:37" (1/3) ... [2021-12-06 20:59:37,988 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23ad283a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 08:59:37, skipping insertion in model container [2021-12-06 20:59:37,988 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 20:59:37,988 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:37" (2/3) ... [2021-12-06 20:59:37,989 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23ad283a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 08:59:37, skipping insertion in model container [2021-12-06 20:59:37,989 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 20:59:37,989 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:59:37" (3/3) ... [2021-12-06 20:59:37,990 INFO L388 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-12-06 20:59:38,036 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 20:59:38,036 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 20:59:38,036 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 20:59:38,036 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 20:59:38,036 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 20:59:38,037 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 20:59:38,037 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 20:59:38,037 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 20:59:38,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:38,067 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:59:38,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:59:38,068 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:59:38,073 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 20:59:38,073 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 20:59:38,073 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 20:59:38,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:38,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:59:38,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:59:38,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:59:38,075 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 20:59:38,075 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 20:59:38,082 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 6#L21true assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 9#L22-2true [2021-12-06 20:59:38,082 INFO L793 eck$LassoCheckResult]: Loop: 9#L22-2true assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 5#L24-2true assume !(main_~y~0#1 < main_~z~0#1); 10#L24-3true main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 9#L22-2true [2021-12-06 20:59:38,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:38,088 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-06 20:59:38,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:38,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149391384] [2021-12-06 20:59:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:38,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:38,167 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:38,181 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:38,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:38,183 INFO L85 PathProgramCache]: Analyzing trace with hash 43923, now seen corresponding path program 1 times [2021-12-06 20:59:38,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:38,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62585247] [2021-12-06 20:59:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:38,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:38,192 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:38,196 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:38,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:38,198 INFO L85 PathProgramCache]: Analyzing trace with hash 889513810, now seen corresponding path program 1 times [2021-12-06 20:59:38,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:38,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406386356] [2021-12-06 20:59:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:38,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:38,205 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:38,211 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:38,269 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:38,269 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:38,269 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:38,269 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:38,270 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:59:38,270 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,270 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:38,270 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:38,270 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2021-12-06 20:59:38,270 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:38,270 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:38,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:38,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:38,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:38,351 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:38,352 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:59:38,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 20:59:38,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:38,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:38,373 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:59:38,373 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: [] [2021-12-06 20:59:38,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:38,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 20:59:38,401 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:38,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:38,416 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:59:38,416 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: [] [2021-12-06 20:59:38,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-06 20:59:38,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,436 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 20:59:38,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:38,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:38,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:38,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 20:59:38,469 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:59:38,469 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:38,665 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:59:38,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:38,668 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:38,668 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:38,668 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:38,669 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:38,669 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:59:38,669 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,669 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:38,669 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:38,669 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2021-12-06 20:59:38,669 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:38,669 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:38,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:38,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:38,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:38,713 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:38,717 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:59:38,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,719 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-06 20:59:38,721 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:38,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:38,728 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:38,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:38,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:38,732 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:59:38,733 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:59:38,737 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:38,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:38,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,757 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-06 20:59:38,758 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:38,766 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:38,766 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:38,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:38,766 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:38,769 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:59:38,769 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:59:38,772 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:38,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-06 20:59:38,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,792 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-06 20:59:38,794 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:38,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:38,802 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:59:38,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:38,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:38,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:38,803 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:59:38,804 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:59:38,806 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:38,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-06 20:59:38,824 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-12-06 20:59:38,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,825 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-06 20:59:38,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:38,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:38,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:38,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:38,834 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-12-06 20:59:38,837 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-12-06 20:59:38,837 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-12-06 20:59:38,841 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:38,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:38,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-06 20:59:38,862 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:38,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:38,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:38,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:38,870 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-12-06 20:59:38,872 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-12-06 20:59:38,873 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-12-06 20:59:38,877 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:38,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-06 20:59:38,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,897 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-06 20:59:38,899 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:38,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:38,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:59:38,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:38,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:38,907 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-12-06 20:59:38,909 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-12-06 20:59:38,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:59:38,912 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:59:38,917 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-06 20:59:38,917 INFO L444 ModelExtractionUtils]: 5 out of 9 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 20:59:38,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:38,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,920 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-06 20:59:38,923 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:59:38,923 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:59:38,923 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:59:38,924 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-06 20:59:38,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-06 20:59:38,945 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:59:38,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:38,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:38,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:38,983 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:59:38,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:39,147 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 [2021-12-06 20:59:39,148 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:39,191 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 48 transitions. Complement of second has 8 states. [2021-12-06 20:59:39,192 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 [2021-12-06 20:59:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2021-12-06 20:59:39,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 3 letters. [2021-12-06 20:59:39,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:39,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 6 letters. Loop has 3 letters. [2021-12-06 20:59:39,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:39,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 6 letters. [2021-12-06 20:59:39,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:39,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2021-12-06 20:59:39,200 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:59:39,202 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 11 states and 15 transitions. [2021-12-06 20:59:39,203 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-06 20:59:39,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-06 20:59:39,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2021-12-06 20:59:39,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 20:59:39,204 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-12-06 20:59:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2021-12-06 20:59:39,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-12-06 20:59:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:39,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-12-06 20:59:39,228 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-12-06 20:59:39,228 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-12-06 20:59:39,228 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 20:59:39,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2021-12-06 20:59:39,229 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:59:39,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:59:39,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:59:39,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-06 20:59:39,230 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-06 20:59:39,230 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-06 20:59:39,230 INFO L791 eck$LassoCheckResult]: Stem: 94#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 95#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 100#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 101#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 96#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 97#L24-2 [2021-12-06 20:59:39,230 INFO L793 eck$LassoCheckResult]: Loop: 97#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 97#L24-2 [2021-12-06 20:59:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:39,231 INFO L85 PathProgramCache]: Analyzing trace with hash 28693995, now seen corresponding path program 1 times [2021-12-06 20:59:39,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:39,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834330932] [2021-12-06 20:59:39,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:39,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,239 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,246 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:39,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:39,246 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2021-12-06 20:59:39,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:39,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519683231] [2021-12-06 20:59:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:39,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,251 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:39,256 INFO L85 PathProgramCache]: Analyzing trace with hash 889513868, now seen corresponding path program 2 times [2021-12-06 20:59:39,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:39,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288299130] [2021-12-06 20:59:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:39,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,263 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,268 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:39,282 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:39,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:39,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:39,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:39,282 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:59:39,282 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:39,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:39,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2021-12-06 20:59:39,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:39,282 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:39,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:39,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:39,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:39,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:39,318 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:39,318 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:59:39,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,319 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-06 20:59:39,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:39,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:39,337 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:59:39,337 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: [] [2021-12-06 20:59:39,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-06 20:59:39,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,367 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-06 20:59:39,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:39,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:39,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:39,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,395 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-06 20:59:39,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:59:39,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:39,417 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:59:39,417 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=-3}, {ULTIMATE.start_main_~x~0#1=3}, {ULTIMATE.start_main_~x~0#1=1}] Lambdas: [2, 1, 1] Nus: [1, 0] [2021-12-06 20:59:39,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-06 20:59:39,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,436 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-06 20:59:39,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:39,437 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:39,451 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:59:39,451 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: [] [2021-12-06 20:59:39,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-06 20:59:39,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,470 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-06 20:59:39,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:39,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:39,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-06 20:59:39,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,499 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-06 20:59:39,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:59:39,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:39,693 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:59:39,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-06 20:59:39,696 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:39,696 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:39,696 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:39,696 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:39,696 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:59:39,696 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,696 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:39,696 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:39,696 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2021-12-06 20:59:39,696 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:39,697 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:39,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:39,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:39,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:39,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:39,724 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:39,725 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:59:39,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,726 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-06 20:59:39,727 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:39,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:39,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:39,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:39,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:39,736 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:59:39,736 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:59:39,739 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:39,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:39,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,759 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-06 20:59:39,761 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:39,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:39,768 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:59:39,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:39,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:39,768 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:39,769 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:59:39,769 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:59:39,771 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:39,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-06 20:59:39,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,790 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-06 20:59:39,792 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:39,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:39,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:39,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:39,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:39,801 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:59:39,801 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:59:39,804 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:39,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-06 20:59:39,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,824 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-06 20:59:39,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:39,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:39,833 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:59:39,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:39,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:39,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:39,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:59:39,834 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:59:39,836 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:59:39,839 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-06 20:59:39,839 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 20:59:39,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,840 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-06 20:59:39,840 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:59:39,841 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:59:39,841 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:59:39,841 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~z~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2021-12-06 20:59:39,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-06 20:59:39,859 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:59:39,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:39,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:39,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:39,878 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:59:39,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:39,879 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-06 20:59:39,879 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 6 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:39,888 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 6. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 29 transitions. Complement of second has 6 states. [2021-12-06 20:59:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-06 20:59:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:39,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-06 20:59:39,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 1 letters. [2021-12-06 20:59:39,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:39,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-06 20:59:39,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:39,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-06 20:59:39,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:39,891 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 29 transitions. [2021-12-06 20:59:39,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:59:39,892 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 20 transitions. [2021-12-06 20:59:39,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-06 20:59:39,893 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-06 20:59:39,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2021-12-06 20:59:39,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 20:59:39,893 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2021-12-06 20:59:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2021-12-06 20:59:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-12-06 20:59:39,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:39,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2021-12-06 20:59:39,895 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-06 20:59:39,895 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-06 20:59:39,895 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 20:59:39,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2021-12-06 20:59:39,895 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:59:39,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:59:39,896 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:59:39,897 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-06 20:59:39,897 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 20:59:39,897 INFO L791 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 163#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 167#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 168#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 172#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 174#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 165#L24-3 [2021-12-06 20:59:39,897 INFO L793 eck$LassoCheckResult]: Loop: 165#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 169#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 164#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 165#L24-3 [2021-12-06 20:59:39,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:39,898 INFO L85 PathProgramCache]: Analyzing trace with hash 889513866, now seen corresponding path program 1 times [2021-12-06 20:59:39,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:39,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964493130] [2021-12-06 20:59:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:39,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,904 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,910 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:39,910 INFO L85 PathProgramCache]: Analyzing trace with hash 56193, now seen corresponding path program 2 times [2021-12-06 20:59:39,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:39,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283074339] [2021-12-06 20:59:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:39,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,915 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,918 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:39,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:39,918 INFO L85 PathProgramCache]: Analyzing trace with hash -440607912, now seen corresponding path program 1 times [2021-12-06 20:59:39,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:39,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311557617] [2021-12-06 20:59:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:39,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,926 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:39,934 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:39,952 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:39,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:39,952 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:39,952 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:39,952 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:59:39,952 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,952 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:39,952 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:39,952 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2021-12-06 20:59:39,952 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:39,952 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:39,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:39,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:39,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:39,981 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:39,981 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:59:39,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:39,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,982 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-06 20:59:39,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:39,983 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:39,996 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:59:39,996 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: [] [2021-12-06 20:59:40,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-06 20:59:40,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,016 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-06 20:59:40,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:40,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:40,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-06 20:59:40,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,046 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-06 20:59:40,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:59:40,048 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:40,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-06 20:59:40,242 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:59:40,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:40,245 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:40,245 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:40,245 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:40,245 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:40,246 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:59:40,246 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,246 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:40,246 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:40,246 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2021-12-06 20:59:40,246 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:40,246 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:40,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:40,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:40,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:40,270 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:40,270 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:59:40,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,271 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-06 20:59:40,272 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:40,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:40,279 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:40,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:40,279 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:40,280 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:59:40,280 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:59:40,283 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:40,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-12-06 20:59:40,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,302 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-06 20:59:40,304 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:40,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:40,311 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:59:40,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:40,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:40,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:40,312 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:59:40,312 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:59:40,314 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:40,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-12-06 20:59:40,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,333 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-06 20:59:40,334 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:40,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:40,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:40,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:40,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:40,343 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:59:40,343 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:59:40,345 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:40,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-06 20:59:40,363 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-12-06 20:59:40,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,364 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-06 20:59:40,365 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:40,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:40,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:40,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:40,373 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-12-06 20:59:40,374 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-12-06 20:59:40,374 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-12-06 20:59:40,377 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:40,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-06 20:59:40,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,397 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-06 20:59:40,398 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:40,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:40,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:59:40,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:40,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:40,406 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-12-06 20:59:40,407 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-12-06 20:59:40,407 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:59:40,409 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:59:40,414 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-12-06 20:59:40,414 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-12-06 20:59:40,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,415 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-06 20:59:40,416 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:59:40,416 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:59:40,416 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:59:40,416 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-06 20:59:40,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:40,435 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:59:40,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:40,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:40,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:40,455 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:59:40,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:40,577 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 [2021-12-06 20:59:40,577 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:40,594 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 31 states and 46 transitions. Complement of second has 8 states. [2021-12-06 20:59:40,595 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 [2021-12-06 20:59:40,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:40,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2021-12-06 20:59:40,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 3 letters. [2021-12-06 20:59:40,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:40,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 9 letters. Loop has 3 letters. [2021-12-06 20:59:40,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:40,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 6 letters. [2021-12-06 20:59:40,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:40,597 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 46 transitions. [2021-12-06 20:59:40,598 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:59:40,598 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 23 states and 34 transitions. [2021-12-06 20:59:40,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-06 20:59:40,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-06 20:59:40,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 34 transitions. [2021-12-06 20:59:40,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 20:59:40,599 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-12-06 20:59:40,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 34 transitions. [2021-12-06 20:59:40,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2021-12-06 20:59:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2021-12-06 20:59:40,601 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2021-12-06 20:59:40,601 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2021-12-06 20:59:40,601 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-06 20:59:40,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2021-12-06 20:59:40,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:59:40,601 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:59:40,601 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:59:40,602 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-06 20:59:40,602 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 20:59:40,602 INFO L791 eck$LassoCheckResult]: Stem: 262#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 263#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 268#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 269#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 266#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 267#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 274#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 264#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 265#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 275#L24-3 [2021-12-06 20:59:40,602 INFO L793 eck$LassoCheckResult]: Loop: 275#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 279#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 278#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 275#L24-3 [2021-12-06 20:59:40,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:40,602 INFO L85 PathProgramCache]: Analyzing trace with hash -442288422, now seen corresponding path program 2 times [2021-12-06 20:59:40,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:40,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509397578] [2021-12-06 20:59:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:40,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:40,608 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:40,613 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:40,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash 56193, now seen corresponding path program 3 times [2021-12-06 20:59:40,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:40,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090136235] [2021-12-06 20:59:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:40,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:40,616 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:40,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:40,619 INFO L85 PathProgramCache]: Analyzing trace with hash 745310728, now seen corresponding path program 3 times [2021-12-06 20:59:40,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:40,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780444052] [2021-12-06 20:59:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:40,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:40,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-12-06 20:59:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:40,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:40,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780444052] [2021-12-06 20:59:40,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780444052] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:40,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786191377] [2021-12-06 20:59:40,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:59:40,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:40,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,668 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 20:59:40,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 20:59:40,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:59:40,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:59:40,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:40,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:59:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:40,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786191377] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:59:40,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:59:40,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2021-12-06 20:59:40,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173406942] [2021-12-06 20:59:40,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:59:40,778 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:40,778 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:40,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:40,778 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:40,778 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:59:40,778 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,778 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:40,778 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:40,778 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2021-12-06 20:59:40,778 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:40,778 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:40,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:40,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:40,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:40,805 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:40,805 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:59:40,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,807 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-06 20:59:40,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:40,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:40,822 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:59:40,822 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: [] [2021-12-06 20:59:40,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-06 20:59:40,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,842 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-06 20:59:40,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:40,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:40,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:40,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:40,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:40,870 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:40,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-06 20:59:40,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:59:40,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:41,056 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:59:41,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-06 20:59:41,059 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:41,059 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:41,059 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:41,060 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:41,060 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:59:41,060 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:41,060 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:41,060 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:41,060 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2021-12-06 20:59:41,060 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:41,060 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:41,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:41,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:41,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:41,085 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:41,085 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:59:41,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:41,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:41,085 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:41,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-06 20:59:41,090 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:41,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:41,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:59:41,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:41,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:41,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:41,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:59:41,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:59:41,100 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:41,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-12-06 20:59:41,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:41,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:41,119 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:41,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-06 20:59:41,120 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:41,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:41,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:41,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:41,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:41,129 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:59:41,129 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:59:41,132 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:41,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-12-06 20:59:41,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:41,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:41,151 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:41,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-06 20:59:41,152 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:41,160 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:41,160 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:41,160 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:41,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:41,161 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:59:41,161 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:59:41,164 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:41,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:41,182 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-12-06 20:59:41,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:41,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:41,183 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:41,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-06 20:59:41,184 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:41,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:41,192 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:59:41,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:41,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:41,192 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-12-06 20:59:41,193 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-12-06 20:59:41,193 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:59:41,195 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:59:41,200 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-06 20:59:41,200 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-12-06 20:59:41,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:41,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:41,201 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:41,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-06 20:59:41,202 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:59:41,202 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:59:41,202 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:59:41,202 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-06 20:59:41,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-12-06 20:59:41,220 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:59:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:41,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:41,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:41,245 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:59:41,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:41,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-12-06 20:59:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:41,352 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 [2021-12-06 20:59:41,352 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:41,370 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 40 transitions. Complement of second has 7 states. [2021-12-06 20:59:41,370 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 [2021-12-06 20:59:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-12-06 20:59:41,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 9 letters. Loop has 3 letters. [2021-12-06 20:59:41,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:41,371 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 20:59:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:41,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:41,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:41,399 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:59:41,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:41,511 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 [2021-12-06 20:59:41,511 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:41,528 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 34 transitions. Complement of second has 7 states. [2021-12-06 20:59:41,528 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 [2021-12-06 20:59:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:41,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-06 20:59:41,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2021-12-06 20:59:41,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:41,529 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 20:59:41,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:41,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:41,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:41,553 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:59:41,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:41,647 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 [2021-12-06 20:59:41,647 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:41,665 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 37 states and 53 transitions. Complement of second has 7 states. [2021-12-06 20:59:41,665 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 [2021-12-06 20:59:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2021-12-06 20:59:41,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 9 letters. Loop has 3 letters. [2021-12-06 20:59:41,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:41,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 12 letters. Loop has 3 letters. [2021-12-06 20:59:41,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:41,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 9 letters. Loop has 6 letters. [2021-12-06 20:59:41,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:41,667 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 53 transitions. [2021-12-06 20:59:41,668 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-06 20:59:41,669 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 25 states and 35 transitions. [2021-12-06 20:59:41,669 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-06 20:59:41,669 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-06 20:59:41,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 35 transitions. [2021-12-06 20:59:41,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 20:59:41,669 INFO L681 BuchiCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-12-06 20:59:41,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 35 transitions. [2021-12-06 20:59:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2021-12-06 20:59:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-12-06 20:59:41,671 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-12-06 20:59:41,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:59:41,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:59:41,674 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:41,740 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2021-12-06 20:59:41,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 20:59:41,740 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2021-12-06 20:59:41,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-06 20:59:41,741 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 29 transitions. [2021-12-06 20:59:41,741 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-06 20:59:41,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-06 20:59:41,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 29 transitions. [2021-12-06 20:59:41,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 20:59:41,742 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-12-06 20:59:41,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 29 transitions. [2021-12-06 20:59:41,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-12-06 20:59:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.35) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2021-12-06 20:59:41,743 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2021-12-06 20:59:41,743 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2021-12-06 20:59:41,743 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-06 20:59:41,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 27 transitions. [2021-12-06 20:59:41,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-06 20:59:41,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:59:41,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:59:41,744 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-06 20:59:41,744 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-06 20:59:41,744 INFO L791 eck$LassoCheckResult]: Stem: 649#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 650#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 655#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 656#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 661#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 665#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 663#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 660#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 662#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 652#L24-2 [2021-12-06 20:59:41,744 INFO L793 eck$LassoCheckResult]: Loop: 652#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 652#L24-2 [2021-12-06 20:59:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:41,745 INFO L85 PathProgramCache]: Analyzing trace with hash -440607910, now seen corresponding path program 4 times [2021-12-06 20:59:41,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:41,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861058530] [2021-12-06 20:59:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:41,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:41,750 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:41,755 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 2 times [2021-12-06 20:59:41,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:41,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56157307] [2021-12-06 20:59:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:41,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:41,757 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:41,759 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:41,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash -773943299, now seen corresponding path program 5 times [2021-12-06 20:59:41,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:41,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748981184] [2021-12-06 20:59:41,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:41,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:41,765 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:41,771 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:41,782 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:41,782 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:41,782 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:41,782 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:41,782 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:59:41,782 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:41,782 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:41,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:41,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2021-12-06 20:59:41,782 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:41,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:41,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:41,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:41,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:41,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:41,811 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:41,811 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:59:41,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:41,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:41,812 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:41,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-06 20:59:41,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:41,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:41,831 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:59:41,831 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: [] [2021-12-06 20:59:41,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:41,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:41,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:41,854 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:41,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-06 20:59:41,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:41,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:41,868 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:59:41,868 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: [] [2021-12-06 20:59:41,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:41,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:41,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:41,887 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:41,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-06 20:59:41,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:41,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:41,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:41,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:41,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:41,915 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:41,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-06 20:59:41,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:59:41,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:42,110 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:59:42,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-12-06 20:59:42,112 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:42,112 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:42,113 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:42,113 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:42,113 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:59:42,113 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,113 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:42,113 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:42,113 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2021-12-06 20:59:42,113 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:42,113 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:42,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:42,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:42,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:42,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:42,135 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:42,135 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:59:42,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:42,136 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:42,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-06 20:59:42,137 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:42,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:42,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:42,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:42,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:42,145 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:59:42,145 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:59:42,147 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:42,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-12-06 20:59:42,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:42,166 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:42,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-06 20:59:42,168 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:42,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:42,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:42,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:42,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:42,176 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:59:42,176 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:59:42,179 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:42,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-12-06 20:59:42,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:42,198 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:42,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-06 20:59:42,200 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:42,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:42,207 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:59:42,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:42,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:42,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:42,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:59:42,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:59:42,209 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:59:42,212 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-06 20:59:42,212 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 20:59:42,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:42,213 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:42,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-12-06 20:59:42,214 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:59:42,214 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:59:42,214 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:59:42,214 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~z~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2021-12-06 20:59:42,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-12-06 20:59:42,232 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:59:42,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:42,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:42,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:42,252 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:59:42,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:42,252 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-06 20:59:42,252 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:42,257 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 31 transitions. Complement of second has 5 states. [2021-12-06 20:59:42,257 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 [2021-12-06 20:59:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-12-06 20:59:42,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2021-12-06 20:59:42,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:42,258 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 20:59:42,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:42,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:42,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:42,275 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:59:42,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:42,276 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-06 20:59:42,276 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:42,280 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 31 transitions. Complement of second has 5 states. [2021-12-06 20:59:42,280 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 [2021-12-06 20:59:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:42,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-12-06 20:59:42,281 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2021-12-06 20:59:42,281 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:42,281 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 20:59:42,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:42,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:42,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:42,298 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:59:42,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:42,299 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 1 loop predicates [2021-12-06 20:59:42,299 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:42,304 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 35 transitions. Complement of second has 4 states. [2021-12-06 20:59:42,304 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 [2021-12-06 20:59:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-12-06 20:59:42,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 1 letters. [2021-12-06 20:59:42,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:42,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 1 letters. [2021-12-06 20:59:42,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:42,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-06 20:59:42,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:42,305 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 35 transitions. [2021-12-06 20:59:42,306 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-06 20:59:42,306 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 22 states and 30 transitions. [2021-12-06 20:59:42,306 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-06 20:59:42,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-06 20:59:42,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 30 transitions. [2021-12-06 20:59:42,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 20:59:42,306 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 30 transitions. [2021-12-06 20:59:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 30 transitions. [2021-12-06 20:59:42,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2021-12-06 20:59:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2021-12-06 20:59:42,308 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-12-06 20:59:42,308 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-12-06 20:59:42,308 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-06 20:59:42,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2021-12-06 20:59:42,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-06 20:59:42,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:59:42,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:59:42,309 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-06 20:59:42,309 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 20:59:42,309 INFO L791 eck$LassoCheckResult]: Stem: 859#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 860#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 865#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 866#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 870#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 876#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 873#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 875#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 872#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 871#L24-2 [2021-12-06 20:59:42,309 INFO L793 eck$LassoCheckResult]: Loop: 871#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 867#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 868#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 874#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 871#L24-2 [2021-12-06 20:59:42,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:42,309 INFO L85 PathProgramCache]: Analyzing trace with hash -440607910, now seen corresponding path program 6 times [2021-12-06 20:59:42,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:42,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219922812] [2021-12-06 20:59:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:42,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:42,313 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:42,317 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:42,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1575536, now seen corresponding path program 1 times [2021-12-06 20:59:42,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:42,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458603764] [2021-12-06 20:59:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:42,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:42,320 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:42,323 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:42,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:42,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1160408759, now seen corresponding path program 7 times [2021-12-06 20:59:42,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:42,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450211783] [2021-12-06 20:59:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:42,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:42,329 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:59:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:59:42,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:59:42,354 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:42,354 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:42,354 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:42,354 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:42,354 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:59:42,354 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,354 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:42,354 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:42,354 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2021-12-06 20:59:42,354 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:42,354 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:42,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:42,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:42,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:42,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-12-06 20:59:42,390 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:42,391 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:59:42,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:42,391 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:42,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-12-06 20:59:42,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:42,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:42,405 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:59:42,405 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: [] [2021-12-06 20:59:42,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-12-06 20:59:42,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:42,424 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:42,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-12-06 20:59:42,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:42,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:42,439 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:59:42,439 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: [] [2021-12-06 20:59:42,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-12-06 20:59:42,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:42,458 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:42,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-06 20:59:42,460 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:59:42,460 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:42,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-12-06 20:59:42,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:42,487 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:42,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-12-06 20:59:42,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:59:42,488 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:59:42,698 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:59:42,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:42,701 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:59:42,701 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:59:42,701 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:59:42,701 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:59:42,701 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:59:42,702 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,702 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:59:42,702 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:59:42,702 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2021-12-06 20:59:42,702 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:59:42,702 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:59:42,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:42,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:42,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:59:42,733 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:59:42,733 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:59:42,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:42,734 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:42,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-12-06 20:59:42,735 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:42,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:42,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:42,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:42,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:42,743 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:59:42,743 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:59:42,745 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:59:42,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:42,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:42,764 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:42,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-06 20:59:42,765 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:59:42,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:59:42,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:59:42,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:59:42,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:59:42,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:59:42,774 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:59:42,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:59:42,776 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:59:42,779 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 20:59:42,779 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 20:59:42,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:59:42,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:42,779 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:42,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-06 20:59:42,780 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:59:42,780 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:59:42,780 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:59:42,780 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2021-12-06 20:59:42,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:42,799 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:59:42,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:42,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:42,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:42,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:59:42,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:59:42,829 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 [2021-12-06 20:59:42,829 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:42,838 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 54 transitions. Complement of second has 6 states. [2021-12-06 20:59:42,839 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 [2021-12-06 20:59:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-06 20:59:42,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-06 20:59:42,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:42,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-06 20:59:42,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:42,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-06 20:59:42,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:59:42,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2021-12-06 20:59:42,841 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 20:59:42,841 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2021-12-06 20:59:42,841 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 20:59:42,841 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 20:59:42,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 20:59:42,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:59:42,841 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:59:42,841 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:59:42,841 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:59:42,841 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-06 20:59:42,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-06 20:59:42,841 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 20:59:42,842 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-06 20:59:42,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 08:59:42 BoogieIcfgContainer [2021-12-06 20:59:42,847 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 20:59:42,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 20:59:42,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 20:59:42,847 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 20:59:42,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:59:37" (3/4) ... [2021-12-06 20:59:42,849 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 20:59:42,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 20:59:42,850 INFO L158 Benchmark]: Toolchain (without parser) took 5234.00ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 43.8MB in the beginning and 50.2MB in the end (delta: -6.4MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-12-06 20:59:42,850 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 79.7MB. Free memory was 60.0MB in the beginning and 60.0MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:59:42,851 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.70ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 43.6MB in the beginning and 74.5MB in the end (delta: -30.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 20:59:42,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.00ms. Allocated memory is still 96.5MB. Free memory was 74.5MB in the beginning and 73.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:59:42,851 INFO L158 Benchmark]: Boogie Preprocessor took 12.31ms. Allocated memory is still 96.5MB. Free memory was 73.2MB in the beginning and 72.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:59:42,852 INFO L158 Benchmark]: RCFGBuilder took 178.80ms. Allocated memory is still 96.5MB. Free memory was 72.1MB in the beginning and 64.1MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 20:59:42,852 INFO L158 Benchmark]: BuchiAutomizer took 4864.60ms. Allocated memory is still 96.5MB. Free memory was 64.1MB in the beginning and 50.2MB in the end (delta: 13.9MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-12-06 20:59:42,852 INFO L158 Benchmark]: Witness Printer took 2.34ms. Allocated memory is still 96.5MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:59:42,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 79.7MB. Free memory was 60.0MB in the beginning and 60.0MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 150.70ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 43.6MB in the beginning and 74.5MB in the end (delta: -30.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.00ms. Allocated memory is still 96.5MB. Free memory was 74.5MB in the beginning and 73.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.31ms. Allocated memory is still 96.5MB. Free memory was 73.2MB in the beginning and 72.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 178.80ms. Allocated memory is still 96.5MB. Free memory was 72.1MB in the beginning and 64.1MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4864.60ms. Allocated memory is still 96.5MB. Free memory was 64.1MB in the beginning and 50.2MB in the end (delta: 13.9MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Witness Printer took 2.34ms. Allocated memory is still 96.5MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 5 locations. One deterministic module has affine ranking function -1 * y + z and consists of 4 locations. One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else x + y) and consists of 5 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else x + y) and consists of 5 locations. One nondeterministic module has affine ranking function -1 * y + z and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.8s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 3.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 147 IncrementalHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 78 mSDtfsCounter, 147 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax168 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp100 dnf100 smp100 tf108 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-06 20:59:42,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-12-06 20:59:43,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-12-06 20:59:43,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22878270-da71-4daa-a403-67e7a92760cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE