./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be --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 8553bd7027647a5604588c30aa29c454809a172163824e055b8bdeea70d5613d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:00:20,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:00:20,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:00:20,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:00:20,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:00:20,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:00:20,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:00:20,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:00:20,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:00:20,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:00:20,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:00:20,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:00:20,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:00:20,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:00:20,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:00:20,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:00:20,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:00:20,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:00:20,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:00:20,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:00:20,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:00:20,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:00:21,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:00:21,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:00:21,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:00:21,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:00:21,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:00:21,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:00:21,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:00:21,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:00:21,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:00:21,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:00:21,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:00:21,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:00:21,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:00:21,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:00:21,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:00:21,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:00:21,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:00:21,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:00:21,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:00:21,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 20:00:21,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:00:21,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:00:21,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:00:21,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:00:21,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:00:21,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:00:21,091 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:00:21,092 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:00:21,092 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:00:21,092 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:00:21,093 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:00:21,094 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:00:21,094 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:00:21,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:00:21,095 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:00:21,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:00:21,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:00:21,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:00:21,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:00:21,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:00:21,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:00:21,097 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:00:21,097 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:00:21,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:00:21,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:00:21,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:00:21,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:00:21,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:00:21,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:00:21,102 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:00:21,102 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_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8553bd7027647a5604588c30aa29c454809a172163824e055b8bdeea70d5613d [2021-10-21 20:00:21,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:00:21,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:00:21,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:00:21,440 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:00:21,441 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:00:21,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2021-10-21 20:00:21,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/data/0b88a7b6d/2cd6e610a7e442bbaaf8d35fef179997/FLAGbc6b4d117 [2021-10-21 20:00:22,064 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:00:22,065 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2021-10-21 20:00:22,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/data/0b88a7b6d/2cd6e610a7e442bbaaf8d35fef179997/FLAGbc6b4d117 [2021-10-21 20:00:22,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/data/0b88a7b6d/2cd6e610a7e442bbaaf8d35fef179997 [2021-10-21 20:00:22,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:00:22,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:00:22,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:00:22,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:00:22,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:00:22,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:00:22" (1/1) ... [2021-10-21 20:00:22,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c764ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:22, skipping insertion in model container [2021-10-21 20:00:22,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:00:22" (1/1) ... [2021-10-21 20:00:22,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:00:22,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:00:23,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:00:23,044 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:00:23,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:00:23,091 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:00:23,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23 WrapperNode [2021-10-21 20:00:23,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:00:23,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:00:23,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:00:23,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:00:23,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23" (1/1) ... [2021-10-21 20:00:23,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23" (1/1) ... [2021-10-21 20:00:23,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:00:23,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:00:23,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:00:23,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:00:23,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23" (1/1) ... [2021-10-21 20:00:23,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23" (1/1) ... [2021-10-21 20:00:23,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23" (1/1) ... [2021-10-21 20:00:23,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23" (1/1) ... [2021-10-21 20:00:23,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23" (1/1) ... [2021-10-21 20:00:23,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23" (1/1) ... [2021-10-21 20:00:23,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23" (1/1) ... [2021-10-21 20:00:23,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:00:23,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:00:23,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:00:23,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:00:23,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23" (1/1) ... [2021-10-21 20:00:23,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:23,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:23,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:23,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:00:23,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:00:23,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:00:23,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:00:23,800 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 20:00:23,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:00:23 BoogieIcfgContainer [2021-10-21 20:00:23,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:00:23,811 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:00:23,811 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:00:23,816 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:00:23,829 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:00:23,829 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:00:22" (1/3) ... [2021-10-21 20:00:23,832 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f1e231a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:00:23, skipping insertion in model container [2021-10-21 20:00:23,832 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:00:23,832 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:23" (2/3) ... [2021-10-21 20:00:23,833 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f1e231a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:00:23, skipping insertion in model container [2021-10-21 20:00:23,833 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:00:23,833 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:00:23" (3/3) ... [2021-10-21 20:00:23,835 INFO L389 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1.c [2021-10-21 20:00:23,966 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:00:23,966 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:00:23,966 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:00:23,966 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:00:23,966 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:00:23,967 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:00:23,967 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:00:23,980 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:00:24,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2021-10-21 20:00:24,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 20:00:24,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:00:24,054 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:00:24,062 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 20:00:24,062 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 20:00:24,062 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:00:24,063 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2021-10-21 20:00:24,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 20:00:24,065 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:00:24,065 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:00:24,066 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 20:00:24,066 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 20:00:24,075 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 4#L18true assume main_~y1~0 > 0 && main_~y2~0 > 0; 8#L20-2true [2021-10-21 20:00:24,076 INFO L793 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~y1~0 != main_~y2~0); 9#L20true assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 8#L20-2true [2021-10-21 20:00:24,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:24,105 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-10-21 20:00:24,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:24,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082648421] [2021-10-21 20:00:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:24,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:24,285 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:24,340 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:24,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:24,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2021-10-21 20:00:24,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:24,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803785468] [2021-10-21 20:00:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:24,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:24,392 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:24,429 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:24,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:24,435 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2021-10-21 20:00:24,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:24,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209564482] [2021-10-21 20:00:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:24,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:24,468 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:24,496 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:24,762 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:24,763 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:24,763 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:24,764 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:24,764 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:00:24,764 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:24,764 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:24,765 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:24,765 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration1_Lasso [2021-10-21 20:00:24,765 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:24,765 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:24,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:24,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:24,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:24,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:24,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:24,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:25,123 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:25,133 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:00:25,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:25,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:25,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:25,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:25,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:25,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 20:00:25,244 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:25,244 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:25,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:25,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:25,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:25,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:25,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:25,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:25,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 20:00:25,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:25,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:25,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:25,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:25,506 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:00:25,506 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:25,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 20:00:25,763 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:00:25,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-21 20:00:25,770 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:25,770 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:25,770 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:25,770 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:25,770 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:00:25,770 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:25,771 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:25,771 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:25,771 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration1_Lasso [2021-10-21 20:00:25,771 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:25,771 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:25,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:25,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:25,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:25,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:25,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:25,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:25,871 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:25,876 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:00:25,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:25,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:25,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:25,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 20:00:25,883 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 [2021-10-21 20:00:25,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:25,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:25,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:25,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:25,903 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:25,903 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:25,925 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:00:25,960 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-10-21 20:00:25,960 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-10-21 20:00:25,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:25,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:25,968 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:25,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 20:00:25,989 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:00:26,005 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-21 20:00:26,005 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:00:26,006 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2021-10-21 20:00:26,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-21 20:00:26,037 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-21 20:00:26,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:26,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:00:26,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:26,137 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:26,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:26,195 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 [2021-10-21 20:00:26,197 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-21 20:00:26,307 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 35 transitions. Complement of second has 6 states. [2021-10-21 20:00:26,307 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 [2021-10-21 20:00:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-21 20:00:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-10-21 20:00:26,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-21 20:00:26,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:26,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-21 20:00:26,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:26,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-21 20:00:26,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:26,322 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2021-10-21 20:00:26,326 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 20:00:26,330 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2021-10-21 20:00:26,333 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-21 20:00:26,333 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-21 20:00:26,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-10-21 20:00:26,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:00:26,334 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-21 20:00:26,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:26,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-10-21 20:00:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-21 20:00:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2021-10-21 20:00:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-10-21 20:00:26,369 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-21 20:00:26,370 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-21 20:00:26,370 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:00:26,370 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-10-21 20:00:26,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 20:00:26,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:00:26,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:00:26,374 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 20:00:26,374 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 20:00:26,374 INFO L791 eck$LassoCheckResult]: Stem: 83#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 81#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 82#L20-2 assume !!(main_~y1~0 != main_~y2~0); 88#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 84#L20-2 [2021-10-21 20:00:26,374 INFO L793 eck$LassoCheckResult]: Loop: 84#L20-2 assume !!(main_~y1~0 != main_~y2~0); 85#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 84#L20-2 [2021-10-21 20:00:26,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:26,375 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2021-10-21 20:00:26,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:26,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449513497] [2021-10-21 20:00:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:26,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:26,395 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:26,417 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:26,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:26,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2021-10-21 20:00:26,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:26,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952940984] [2021-10-21 20:00:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:26,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:26,435 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:26,439 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:26,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:26,440 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2021-10-21 20:00:26,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:26,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316441193] [2021-10-21 20:00:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:26,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:26,475 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:26,483 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:26,550 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:26,551 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:26,551 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:26,551 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:26,551 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:00:26,551 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:26,551 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:26,551 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:26,551 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration2_Lasso [2021-10-21 20:00:26,552 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:26,552 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:26,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:26,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:26,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:26,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:26,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:26,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:26,628 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:26,628 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:00:26,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:26,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:26,629 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:26,636 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:26,636 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:26,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 20:00:26,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:26,673 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: [] [2021-10-21 20:00:26,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:26,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:26,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:26,709 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:26,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 20:00:26,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:26,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:26,724 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:26,724 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:26,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:26,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:26,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:26,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:26,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:26,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:26,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 20:00:26,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-21 20:00:26,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:26,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:26,809 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:26,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 20:00:26,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:00:26,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:26,955 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:00:26,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-21 20:00:26,962 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:26,962 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:26,962 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:26,962 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:26,962 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:00:26,963 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:26,963 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:26,963 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:26,963 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration2_Lasso [2021-10-21 20:00:26,963 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:26,963 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:26,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:26,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:26,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:27,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:27,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:27,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:27,079 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:27,079 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:00:27,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:27,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:27,080 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:27,093 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 [2021-10-21 20:00:27,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:27,104 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:27,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:27,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:27,117 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:27,117 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:27,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 20:00:27,140 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:27,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:27,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:27,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:27,177 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:27,184 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 [2021-10-21 20:00:27,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:27,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:00:27,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:27,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:27,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:27,196 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:00:27,196 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:00:27,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 20:00:27,208 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:27,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:27,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:27,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:27,254 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:27,260 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 [2021-10-21 20:00:27,270 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:27,270 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:27,270 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:27,270 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:27,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 20:00:27,277 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:27,277 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:27,291 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:00:27,299 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-10-21 20:00:27,299 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:00:27,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:27,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:27,301 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:27,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 20:00:27,305 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:00:27,342 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-21 20:00:27,342 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:00:27,343 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y1~0 - 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2021-10-21 20:00:27,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:27,385 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-21 20:00:27,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:27,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:27,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:27,482 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:27,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:27,510 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2021-10-21 20:00:27,510 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-21 20:00:27,556 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 12 states and 17 transitions. Complement of second has 6 states. [2021-10-21 20:00:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 20:00:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-21 20:00:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2021-10-21 20:00:27,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-21 20:00:27,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:27,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2021-10-21 20:00:27,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:27,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-21 20:00:27,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:27,560 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2021-10-21 20:00:27,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 20:00:27,563 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2021-10-21 20:00:27,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-21 20:00:27,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-21 20:00:27,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-10-21 20:00:27,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:00:27,565 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-10-21 20:00:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-10-21 20:00:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-21 20:00:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 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) [2021-10-21 20:00:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2021-10-21 20:00:27,569 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-10-21 20:00:27,569 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-10-21 20:00:27,570 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:00:27,572 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2021-10-21 20:00:27,575 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 20:00:27,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:00:27,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:00:27,575 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2021-10-21 20:00:27,576 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 20:00:27,576 INFO L791 eck$LassoCheckResult]: Stem: 153#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 151#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 152#L20-2 assume !!(main_~y1~0 != main_~y2~0); 158#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 159#L20-2 assume !!(main_~y1~0 != main_~y2~0); 160#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 154#L20-2 [2021-10-21 20:00:27,576 INFO L793 eck$LassoCheckResult]: Loop: 154#L20-2 assume !!(main_~y1~0 != main_~y2~0); 155#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 154#L20-2 [2021-10-21 20:00:27,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:27,577 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2021-10-21 20:00:27,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:27,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316405969] [2021-10-21 20:00:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:27,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:27,607 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:27,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:27,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:27,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2021-10-21 20:00:27,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:27,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728769536] [2021-10-21 20:00:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:27,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:27,626 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:27,630 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:27,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:27,631 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2021-10-21 20:00:27,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:27,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230341040] [2021-10-21 20:00:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:27,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:27,640 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:27,659 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:27,730 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:27,730 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:27,730 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:27,730 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:27,730 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:00:27,730 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:27,731 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:27,731 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:27,731 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration3_Lasso [2021-10-21 20:00:27,731 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:27,731 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:27,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:27,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:27,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:27,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:27,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:27,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:27,808 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:27,808 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:00:27,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:27,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:27,810 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:27,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:27,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:27,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 20:00:27,845 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:27,845 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:27,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:27,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:27,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:27,878 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:27,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 20:00:27,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:27,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:27,897 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:27,897 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:27,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:27,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:27,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:27,923 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:27,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 20:00:27,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:27,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:27,938 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:27,938 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:27,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:27,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:27,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:27,964 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:27,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-21 20:00:27,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:27,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:28,009 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:28,009 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: [] [2021-10-21 20:00:28,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:28,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:28,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:28,036 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:28,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 20:00:28,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:28,038 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:28,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:28,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:28,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:28,109 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:28,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:00:28,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:28,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 20:00:28,275 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:00:28,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:28,281 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:28,281 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:28,281 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:28,281 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:28,281 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:00:28,281 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:28,281 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:28,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:28,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration3_Lasso [2021-10-21 20:00:28,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:28,282 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:28,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:28,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:28,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:28,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:28,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:28,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:28,398 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:28,398 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:00:28,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:28,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:28,401 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:28,413 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 [2021-10-21 20:00:28,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:28,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:00:28,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:28,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:28,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:28,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 20:00:28,425 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:00:28,425 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:00:28,448 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:28,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:28,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:28,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:28,474 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:28,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-21 20:00:28,503 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 [2021-10-21 20:00:28,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:28,513 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:00:28,513 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:28,513 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:28,513 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:28,514 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:00:28,514 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:00:28,522 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:28,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:28,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:28,549 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:28,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:28,549 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:28,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-21 20:00:28,551 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 [2021-10-21 20:00:28,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:28,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:28,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:28,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:28,562 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:28,562 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:28,584 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:28,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-10-21 20:00:28,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:28,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:28,610 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:28,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-21 20:00:28,611 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 [2021-10-21 20:00:28,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:28,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:28,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:28,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:28,625 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:28,625 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:28,633 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:28,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-10-21 20:00:28,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:28,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:28,657 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:28,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-21 20:00:28,659 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 [2021-10-21 20:00:28,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:28,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:28,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:28,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:28,685 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:28,685 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:28,697 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:00:28,711 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-10-21 20:00:28,711 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:00:28,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:28,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:28,717 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:28,719 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:00:28,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-21 20:00:28,749 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-21 20:00:28,749 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:00:28,750 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2021-10-21 20:00:28,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:28,787 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-21 20:00:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:28,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:28,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:28,866 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:28,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:28,888 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2021-10-21 20:00:28,889 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 20:00:28,928 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 14 states and 21 transitions. Complement of second has 6 states. [2021-10-21 20:00:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 20:00:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 20:00:28,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2021-10-21 20:00:28,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2021-10-21 20:00:28,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:28,930 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:00:28,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:28,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:28,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:29,025 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:29,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:29,041 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2021-10-21 20:00:29,041 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 20:00:29,073 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 14 states and 21 transitions. Complement of second has 6 states. [2021-10-21 20:00:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 20:00:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 20:00:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2021-10-21 20:00:29,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2021-10-21 20:00:29,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:29,076 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:00:29,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:29,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:29,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:29,147 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:29,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:29,161 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2021-10-21 20:00:29,161 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 20:00:29,201 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 16 states and 24 transitions. Complement of second has 5 states. [2021-10-21 20:00:29,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 20:00:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 20:00:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-21 20:00:29,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2021-10-21 20:00:29,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:29,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2021-10-21 20:00:29,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:29,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-21 20:00:29,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:29,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2021-10-21 20:00:29,205 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 20:00:29,206 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2021-10-21 20:00:29,206 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-21 20:00:29,206 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-21 20:00:29,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2021-10-21 20:00:29,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:00:29,207 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2021-10-21 20:00:29,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2021-10-21 20:00:29,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2021-10-21 20:00:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-10-21 20:00:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2021-10-21 20:00:29,208 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-10-21 20:00:29,209 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-10-21 20:00:29,209 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:00:29,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2021-10-21 20:00:29,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 20:00:29,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:00:29,209 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:00:29,210 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 20:00:29,210 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 20:00:29,210 INFO L791 eck$LassoCheckResult]: Stem: 332#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 330#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 331#L20-2 [2021-10-21 20:00:29,210 INFO L793 eck$LassoCheckResult]: Loop: 331#L20-2 assume !!(main_~y1~0 != main_~y2~0); 334#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 331#L20-2 [2021-10-21 20:00:29,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:29,211 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2021-10-21 20:00:29,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:29,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366583218] [2021-10-21 20:00:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:29,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:29,218 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:29,222 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:29,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:29,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1382, now seen corresponding path program 1 times [2021-10-21 20:00:29,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:29,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685338234] [2021-10-21 20:00:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:29,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:29,231 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:29,235 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:29,236 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 3 times [2021-10-21 20:00:29,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:29,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403625808] [2021-10-21 20:00:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:29,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:29,242 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:29,247 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:29,293 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:29,293 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:29,293 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:29,293 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:29,294 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:00:29,294 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,294 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:29,294 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:29,294 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration4_Lasso [2021-10-21 20:00:29,294 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:29,294 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:29,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,391 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:29,391 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:00:29,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:29,392 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:29,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:29,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:29,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-21 20:00:29,421 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:29,421 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:29,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-21 20:00:29,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:29,449 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:29,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:29,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:29,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-21 20:00:29,477 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:29,477 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:29,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:29,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:29,503 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:29,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-21 20:00:29,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:29,505 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:29,520 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:29,520 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:29,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:29,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:29,541 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:29,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-21 20:00:29,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:29,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:29,552 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:29,552 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:29,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:29,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:29,576 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:29,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-21 20:00:29,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:29,579 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:29,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:29,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:29,621 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:29,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-21 20:00:29,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:00:29,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:29,741 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:00:29,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-21 20:00:29,744 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:29,744 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:29,744 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:29,744 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:29,744 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:00:29,744 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,744 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:29,744 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:29,744 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration4_Lasso [2021-10-21 20:00:29,745 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:29,745 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:29,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:29,837 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:29,838 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:00:29,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:29,839 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:29,842 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 [2021-10-21 20:00:29,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-21 20:00:29,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:29,852 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:00:29,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:29,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:29,852 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:29,853 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:00:29,853 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:00:29,855 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:29,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-10-21 20:00:29,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:29,879 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:29,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-21 20:00:29,881 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 [2021-10-21 20:00:29,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:29,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:00:29,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:29,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:29,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:29,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:00:29,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:00:29,893 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:29,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:29,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:29,921 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:29,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-21 20:00:29,931 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 [2021-10-21 20:00:29,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:29,944 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:00:29,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:29,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:29,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:29,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:00:29,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:00:29,961 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:29,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-21 20:00:29,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:29,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:29,982 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:29,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-21 20:00:29,985 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 [2021-10-21 20:00:29,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:29,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:29,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:29,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:29,995 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:29,995 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:30,010 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:30,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:30,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:30,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:30,036 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:30,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-21 20:00:30,040 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 [2021-10-21 20:00:30,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:30,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:30,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:30,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:30,052 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:30,053 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:30,059 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:00:30,065 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-10-21 20:00:30,065 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:00:30,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:30,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:30,066 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:30,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-21 20:00:30,067 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:00:30,078 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-21 20:00:30,078 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:00:30,078 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = -1*ULTIMATE.start_main_~y1~0 + 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2021-10-21 20:00:30,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:30,121 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-21 20:00:30,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:30,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:00:30,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:30,162 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:00:30,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:30,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:30,189 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 [2021-10-21 20:00:30,189 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-21 20:00:30,223 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 12 states and 18 transitions. Complement of second has 5 states. [2021-10-21 20:00:30,223 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 [2021-10-21 20:00:30,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-21 20:00:30,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2021-10-21 20:00:30,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-21 20:00:30,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:30,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-21 20:00:30,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:30,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-21 20:00:30,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:30,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2021-10-21 20:00:30,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 20:00:30,226 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 14 transitions. [2021-10-21 20:00:30,226 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-21 20:00:30,226 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-10-21 20:00:30,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2021-10-21 20:00:30,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:00:30,226 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-10-21 20:00:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2021-10-21 20:00:30,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-10-21 20:00:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 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) [2021-10-21 20:00:30,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2021-10-21 20:00:30,228 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-21 20:00:30,228 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-21 20:00:30,228 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 20:00:30,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2021-10-21 20:00:30,229 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 20:00:30,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:00:30,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:00:30,230 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2021-10-21 20:00:30,230 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 20:00:30,231 INFO L791 eck$LassoCheckResult]: Stem: 392#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 390#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 391#L20-2 assume !!(main_~y1~0 != main_~y2~0); 393#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 398#L20-2 assume !!(main_~y1~0 != main_~y2~0); 396#L20 [2021-10-21 20:00:30,231 INFO L793 eck$LassoCheckResult]: Loop: 396#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 397#L20-2 assume !!(main_~y1~0 != main_~y2~0); 396#L20 [2021-10-21 20:00:30,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:30,231 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2021-10-21 20:00:30,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:30,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563116375] [2021-10-21 20:00:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:30,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:30,237 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:30,242 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:30,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:30,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2021-10-21 20:00:30,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:30,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037346145] [2021-10-21 20:00:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:30,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:30,247 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:30,251 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:30,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:30,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 3 times [2021-10-21 20:00:30,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:30,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580941542] [2021-10-21 20:00:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:30,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:30,258 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:30,264 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:30,324 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:30,324 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:30,324 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:30,324 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:30,325 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:00:30,325 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:30,325 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:30,325 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:30,325 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration5_Lasso [2021-10-21 20:00:30,325 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:30,326 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:30,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:30,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:30,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:30,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:30,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:30,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:30,431 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:30,431 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:00:30,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:30,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:30,433 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:30,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:30,437 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:30,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-21 20:00:30,465 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:30,465 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: [] [2021-10-21 20:00:30,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:30,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:30,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:30,509 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:30,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:30,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:30,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-21 20:00:30,536 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:30,536 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:30,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:30,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:30,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:30,574 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:30,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:30,576 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:30,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-21 20:00:30,603 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:30,603 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:30,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:30,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:30,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:30,642 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:30,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-21 20:00:30,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:30,643 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:30,654 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:30,654 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:00:30,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-10-21 20:00:30,676 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:30,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:30,677 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:30,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-21 20:00:30,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:30,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:30,692 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:30,692 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: [] [2021-10-21 20:00:30,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:30,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:30,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:30,721 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:30,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-21 20:00:30,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:30,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:30,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:30,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-21 20:00:30,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:30,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:30,809 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:30,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:30,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-21 20:00:30,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:00:30,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:31,066 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:00:31,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-10-21 20:00:31,069 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:31,070 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:31,070 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:31,070 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:31,070 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:00:31,070 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:31,070 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:31,070 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:31,070 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration5_Lasso [2021-10-21 20:00:31,070 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:31,070 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:31,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:31,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:31,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:31,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:31,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:31,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:31,180 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:31,181 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:00:31,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:31,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:31,182 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:31,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-21 20:00:31,183 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 [2021-10-21 20:00:31,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:31,191 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:31,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:31,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:31,194 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:31,194 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:31,201 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:31,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-10-21 20:00:31,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:31,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:31,223 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:31,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-21 20:00:31,225 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 [2021-10-21 20:00:31,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:31,233 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:00:31,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:31,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:31,234 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:31,234 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:00:31,234 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:00:31,235 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:31,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:31,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:31,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:31,258 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:31,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-21 20:00:31,259 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 [2021-10-21 20:00:31,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:31,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:31,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:31,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:31,268 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:31,268 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:31,296 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:31,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-21 20:00:31,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:31,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:31,332 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:31,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-21 20:00:31,346 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 [2021-10-21 20:00:31,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:31,356 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:00:31,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:31,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:31,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:31,357 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:00:31,357 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:00:31,369 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:31,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:31,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:31,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:31,394 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:31,396 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 [2021-10-21 20:00:31,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-21 20:00:31,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:31,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:00:31,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:31,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:31,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:31,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:00:31,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:00:31,415 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:31,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:31,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:31,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:31,440 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:31,442 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 [2021-10-21 20:00:31,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-21 20:00:31,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:31,450 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2021-10-21 20:00:31,451 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-21 20:00:31,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:31,460 INFO L401 nArgumentSynthesizer]: We have 20 Motzkin's Theorem applications. [2021-10-21 20:00:31,460 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-21 20:00:31,492 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:00:31,535 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2021-10-21 20:00:31,535 INFO L444 ModelExtractionUtils]: 4 out of 16 variables were initially zero. Simplification set additionally 6 variables to zero. [2021-10-21 20:00:31,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:31,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:31,541 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:31,543 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:00:31,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-21 20:00:31,571 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 4. [2021-10-21 20:00:31,571 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:00:31,572 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = 3*ULTIMATE.start_main_~y2~0 - 2*ULTIMATE.start_main_~y1~0 Supporting invariants [3*ULTIMATE.start_main_~y1~0 - 2 >= 0, 1*ULTIMATE.start_main_~y2~0 >= 0] [2021-10-21 20:00:31,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:31,614 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2021-10-21 20:00:31,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:31,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:00:31,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:31,698 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:31,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:31,746 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2021-10-21 20:00:31,746 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 20:00:31,772 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14 states and 18 transitions. Complement of second has 6 states. [2021-10-21 20:00:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 20:00:31,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 20:00:31,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2021-10-21 20:00:31,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-21 20:00:31,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:31,774 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:00:31,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:31,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:00:31,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:31,842 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:31,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:31,881 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 2 loop predicates [2021-10-21 20:00:31,881 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 20:00:31,925 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 11 states and 15 transitions. Complement of second has 6 states. [2021-10-21 20:00:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 20:00:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 20:00:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2021-10-21 20:00:31,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-21 20:00:31,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:31,926 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:00:31,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:31,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:00:31,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:31,983 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:31,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:32,021 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2021-10-21 20:00:32,021 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 20:00:32,051 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 17 states and 21 transitions. Complement of second has 5 states. [2021-10-21 20:00:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 20:00:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 20:00:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-21 20:00:32,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-21 20:00:32,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:32,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2021-10-21 20:00:32,056 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:32,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-21 20:00:32,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:32,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2021-10-21 20:00:32,058 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-21 20:00:32,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 17 transitions. [2021-10-21 20:00:32,059 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-10-21 20:00:32,059 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-10-21 20:00:32,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2021-10-21 20:00:32,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:00:32,060 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-10-21 20:00:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2021-10-21 20:00:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 8. [2021-10-21 20:00:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2021-10-21 20:00:32,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-10-21 20:00:32,062 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-21 20:00:32,062 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-21 20:00:32,062 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 20:00:32,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-10-21 20:00:32,062 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 20:00:32,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:00:32,063 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:00:32,063 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2021-10-21 20:00:32,063 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-10-21 20:00:32,063 INFO L791 eck$LassoCheckResult]: Stem: 561#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 559#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 560#L20-2 assume !!(main_~y1~0 != main_~y2~0); 562#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 566#L20-2 assume !!(main_~y1~0 != main_~y2~0); 565#L20 [2021-10-21 20:00:32,064 INFO L793 eck$LassoCheckResult]: Loop: 565#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 564#L20-2 assume !!(main_~y1~0 != main_~y2~0); 562#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 566#L20-2 assume !!(main_~y1~0 != main_~y2~0); 565#L20 [2021-10-21 20:00:32,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:32,064 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 3 times [2021-10-21 20:00:32,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:32,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074339077] [2021-10-21 20:00:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:32,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:32,069 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:32,074 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:32,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1472761, now seen corresponding path program 1 times [2021-10-21 20:00:32,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:32,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931187135] [2021-10-21 20:00:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:32,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:32,080 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:32,084 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:32,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:32,085 INFO L82 PathProgramCache]: Analyzing trace with hash -204426530, now seen corresponding path program 4 times [2021-10-21 20:00:32,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:32,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632318734] [2021-10-21 20:00:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:32,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:32,092 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:32,099 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:32,135 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:32,135 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:32,135 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:32,135 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:32,136 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:00:32,136 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:32,136 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:32,136 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:32,136 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration6_Loop [2021-10-21 20:00:32,136 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:32,136 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:32,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:32,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:32,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:32,260 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:32,261 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:00:32,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:32,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:32,261 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:32,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:32,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:32,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-21 20:00:32,301 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:32,301 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: [] [2021-10-21 20:00:32,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:32,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:32,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:32,339 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:32,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-21 20:00:32,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:32,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:32,356 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:00:32,356 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: [] [2021-10-21 20:00:32,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-10-21 20:00:32,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:32,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:32,381 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:32,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-21 20:00:32,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:00:32,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:32,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:32,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:32,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:32,422 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:32,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-21 20:00:32,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:00:32,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:00:33,067 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:00:33,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:33,071 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:00:33,071 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:00:33,071 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:00:33,071 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:00:33,071 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:00:33,071 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:33,071 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:00:33,072 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:00:33,072 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration6_Loop [2021-10-21 20:00:33,072 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:00:33,072 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:00:33,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:33,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:33,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:00:33,209 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:00:33,209 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:00:33,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:33,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:33,217 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:33,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-21 20:00:33,219 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 [2021-10-21 20:00:33,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:33,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:33,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:33,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:33,228 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:33,228 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:33,256 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:33,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-10-21 20:00:33,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:33,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:33,284 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:33,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-21 20:00:33,285 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 [2021-10-21 20:00:33,294 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:33,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:33,295 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:00:33,295 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:33,299 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:00:33,299 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:00:33,302 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:00:33,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-10-21 20:00:33,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:33,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:33,326 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:33,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-21 20:00:33,329 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 [2021-10-21 20:00:33,337 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:00:33,337 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:00:33,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:00:33,338 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-21 20:00:33,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:00:33,341 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-21 20:00:33,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:00:33,376 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:00:33,380 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 20:00:33,381 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:00:33,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:00:33,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:33,385 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:33,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-21 20:00:33,386 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:00:33,386 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:00:33,387 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:00:33,387 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y2~0 Supporting invariants [] [2021-10-21 20:00:33,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-10-21 20:00:33,407 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:00:33,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:33,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:00:33,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:33,435 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:00:33,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:33,500 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 [2021-10-21 20:00:33,501 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 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) [2021-10-21 20:00:33,532 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. 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 27 states and 41 transitions. Complement of second has 6 states. [2021-10-21 20:00:33,533 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 [2021-10-21 20:00:33,533 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) [2021-10-21 20:00:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2021-10-21 20:00:33,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-21 20:00:33,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:33,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 4 letters. [2021-10-21 20:00:33,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:33,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 8 letters. [2021-10-21 20:00:33,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:00:33,535 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 41 transitions. [2021-10-21 20:00:33,539 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:00:33,539 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2021-10-21 20:00:33,539 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 20:00:33,539 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 20:00:33,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 20:00:33,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:00:33,540 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:00:33,540 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:00:33,540 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:00:33,540 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 20:00:33,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:00:33,540 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:00:33,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 20:00:33,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:00:33 BoogieIcfgContainer [2021-10-21 20:00:33,548 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:00:33,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:00:33,549 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:00:33,549 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:00:33,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:00:23" (3/4) ... [2021-10-21 20:00:33,553 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:00:33,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:00:33,555 INFO L168 Benchmark]: Toolchain (without parser) took 11080.11 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 120.0 MB in the beginning and 74.7 MB in the end (delta: 45.3 MB). Peak memory consumption was 76.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:33,555 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:00:33,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.07 ms. Allocated memory is still 153.1 MB. Free memory was 119.7 MB in the beginning and 130.2 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:33,556 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.76 ms. Allocated memory is still 153.1 MB. Free memory was 130.2 MB in the beginning and 128.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:00:33,556 INFO L168 Benchmark]: Boogie Preprocessor took 65.96 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 127.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:33,557 INFO L168 Benchmark]: RCFGBuilder took 554.08 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 120.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:33,557 INFO L168 Benchmark]: BuchiAutomizer took 9737.90 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 120.3 MB in the beginning and 74.7 MB in the end (delta: 45.6 MB). Peak memory consumption was 79.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:33,558 INFO L168 Benchmark]: Witness Printer took 4.39 ms. Allocated memory is still 184.5 MB. Free memory is still 74.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:00:33,560 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 600.07 ms. Allocated memory is still 153.1 MB. Free memory was 119.7 MB in the beginning and 130.2 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.76 ms. Allocated memory is still 153.1 MB. Free memory was 130.2 MB in the beginning and 128.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.96 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 127.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 554.08 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 120.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9737.90 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 120.3 MB in the beginning and 74.7 MB in the end (delta: 45.6 MB). Peak memory consumption was 79.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.39 ms. Allocated memory is still 184.5 MB. Free memory is still 74.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One deterministic module has affine ranking function y2 + -1 * y1 and consists of 3 locations. One deterministic module has affine ranking function y2 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One nondeterministic module has affine ranking function -2 * y1 + 3 * y2 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.6s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 7.8s. Construction of modules took 0.1s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 23.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 32 SDtfs, 48 SDslu, 3 SDs, 0 SdLazy, 99 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.6ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax158 hnf98 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf96 smp87 dnf123 smp96 tf100 neg95 sie124 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 131ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 2 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 20 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 20:00:33,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:33,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:34,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70cf64fb-74ee-41ce-8c84-87996362662a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...