./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.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_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/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_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/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_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/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 9c9c032ca120503dfa93615a57a0bb47775014248f579f3a3fd38a4985b2298b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 20:02:23,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:02:23,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:02:23,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:02:23,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:02:23,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:02:23,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:02:23,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:02:23,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:02:23,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:02:23,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:02:23,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:02:23,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:02:23,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:02:23,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:02:23,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:02:23,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:02:23,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:02:23,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:02:23,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:02:23,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:02:23,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:02:23,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:02:23,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:02:23,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:02:23,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:02:23,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:02:23,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:02:23,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:02:23,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:02:23,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:02:23,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:02:23,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:02:23,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:02:23,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:02:23,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:02:23,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:02:23,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:02:23,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:02:23,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:02:23,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:02:23,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 20:02:23,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:02:23,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:02:23,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:02:23,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:02:23,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:02:23,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:02:23,511 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:02:23,512 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:02:23,512 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:02:23,512 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:02:23,514 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:02:23,514 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:02:23,514 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:02:23,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:02:23,515 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:02:23,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:02:23,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:02:23,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:02:23,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:02:23,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:02:23,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:02:23,517 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:02:23,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:02:23,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:02:23,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:02:23,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:02:23,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:02:23,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:02:23,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:02:23,523 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:02:23,523 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_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c9c032ca120503dfa93615a57a0bb47775014248f579f3a3fd38a4985b2298b [2021-10-21 20:02:23,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:02:23,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:02:23,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:02:23,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:02:23,910 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:02:23,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c [2021-10-21 20:02:23,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/data/b1c54561a/d0abc4d6f17f451bbc22c3404a579fc7/FLAG5272fb38a [2021-10-21 20:02:24,460 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:02:24,461 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c [2021-10-21 20:02:24,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/data/b1c54561a/d0abc4d6f17f451bbc22c3404a579fc7/FLAG5272fb38a [2021-10-21 20:02:24,821 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/data/b1c54561a/d0abc4d6f17f451bbc22c3404a579fc7 [2021-10-21 20:02:24,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:02:24,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:02:24,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:02:24,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:02:24,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:02:24,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:02:24" (1/1) ... [2021-10-21 20:02:24,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e448045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:24, skipping insertion in model container [2021-10-21 20:02:24,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:02:24" (1/1) ... [2021-10-21 20:02:24,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:02:24,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:02:25,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:02:25,046 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:02:25,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:02:25,102 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:02:25,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25 WrapperNode [2021-10-21 20:02:25,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:02:25,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:02:25,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:02:25,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:02:25,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:02:25,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:02:25,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:02:25,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:02:25,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:02:25,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:02:25,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:02:25,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:02:25,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25" (1/1) ... [2021-10-21 20:02:25,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:25,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:25,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:25,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:02:25,275 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2021-10-21 20:02:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2021-10-21 20:02:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2021-10-21 20:02:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2021-10-21 20:02:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:02:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:02:25,506 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:02:25,514 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 20:02:25,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:25 BoogieIcfgContainer [2021-10-21 20:02:25,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:02:25,520 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:02:25,520 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:02:25,524 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:02:25,525 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:02:25,525 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:02:24" (1/3) ... [2021-10-21 20:02:25,527 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@67ff8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:02:25, skipping insertion in model container [2021-10-21 20:02:25,528 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:02:25,528 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:25" (2/3) ... [2021-10-21 20:02:25,529 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@67ff8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:02:25, skipping insertion in model container [2021-10-21 20:02:25,529 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:02:25,529 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:25" (3/3) ... [2021-10-21 20:02:25,531 INFO L389 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_1d.c [2021-10-21 20:02:25,607 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:02:25,607 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:02:25,608 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:02:25,609 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:02:25,609 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:02:25,609 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:02:25,609 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:02:25,610 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:02:25,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-21 20:02:25,679 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2021-10-21 20:02:25,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:25,681 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:25,691 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 20:02:25,691 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:25,691 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:02:25,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-21 20:02:25,700 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2021-10-21 20:02:25,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:25,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:25,702 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 20:02:25,702 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:25,712 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 10#L25true call main_#t~ret6 := rec2(main_~x~0);< 16#rec2ENTRYtrue [2021-10-21 20:02:25,713 INFO L793 eck$LassoCheckResult]: Loop: 16#rec2ENTRYtrue ~j := #in~j; 17#L18true assume !(~j <= 0); 20#L20true call #t~ret3 := rec1(~j);< 22#rec1ENTRYtrue ~i := #in~i; 18#L12true assume ~i <= 0;#res := 0; 14#rec1FINALtrue assume true; 15#rec1EXITtrue >#33#return; 4#L20-1true call #t~ret4 := rec2(#t~ret3 - 1);< 16#rec2ENTRYtrue [2021-10-21 20:02:25,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:25,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1617, now seen corresponding path program 1 times [2021-10-21 20:02:25,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:25,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339615323] [2021-10-21 20:02:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:25,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:25,808 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:25,833 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:25,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:25,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1102838740, now seen corresponding path program 1 times [2021-10-21 20:02:25,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:25,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151428354] [2021-10-21 20:02:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:25,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-21 20:02:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:25,980 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 20:02:25,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:02:25,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151428354] [2021-10-21 20:02:25,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151428354] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:02:25,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:02:25,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:02:25,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103299787] [2021-10-21 20:02:25,989 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:02:25,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:02:26,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:02:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:02:26,012 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:02:26,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:02:26,143 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-10-21 20:02:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:02:26,146 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 33 transitions. [2021-10-21 20:02:26,177 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2021-10-21 20:02:26,184 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 16 states and 22 transitions. [2021-10-21 20:02:26,191 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-21 20:02:26,196 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-21 20:02:26,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2021-10-21 20:02:26,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:02:26,199 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-10-21 20:02:26,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2021-10-21 20:02:26,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-21 20:02:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.125) internal successors, (9), 9 states have internal predecessors, (9), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-21 20:02:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-10-21 20:02:26,262 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-10-21 20:02:26,262 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-10-21 20:02:26,262 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:02:26,262 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2021-10-21 20:02:26,264 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2021-10-21 20:02:26,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:26,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:26,265 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 20:02:26,265 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:26,266 INFO L791 eck$LassoCheckResult]: Stem: 66#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 64#L25 call main_#t~ret6 := rec2(main_~x~0);< 65#rec2ENTRY [2021-10-21 20:02:26,266 INFO L793 eck$LassoCheckResult]: Loop: 65#rec2ENTRY ~j := #in~j; 76#L18 assume !(~j <= 0); 68#L20 call #t~ret3 := rec1(~j);< 73#rec1ENTRY ~i := #in~i; 77#L12 assume !(~i <= 0); 69#L14 call #t~ret0 := rec1(~i - 2);< 73#rec1ENTRY ~i := #in~i; 77#L12 assume ~i <= 0;#res := 0; 74#rec1FINAL assume true; 75#rec1EXIT >#27#return; 70#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 73#rec1ENTRY ~i := #in~i; 77#L12 assume ~i <= 0;#res := 0; 74#rec1FINAL assume true; 75#rec1EXIT >#29#return; 71#L14-2 call #t~ret2 := rec1(#t~ret1);< 73#rec1ENTRY ~i := #in~i; 77#L12 assume ~i <= 0;#res := 0; 74#rec1FINAL assume true; 75#rec1EXIT >#31#return; 67#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 72#rec1FINAL assume true; 78#rec1EXIT >#33#return; 63#L20-1 call #t~ret4 := rec2(#t~ret3 - 1);< 65#rec2ENTRY [2021-10-21 20:02:26,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:26,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1617, now seen corresponding path program 2 times [2021-10-21 20:02:26,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:26,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637221940] [2021-10-21 20:02:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:26,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:26,272 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:26,276 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:26,277 INFO L82 PathProgramCache]: Analyzing trace with hash -616266826, now seen corresponding path program 1 times [2021-10-21 20:02:26,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:26,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299881234] [2021-10-21 20:02:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:26,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:26,300 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:26,331 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:26,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:26,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1277860358, now seen corresponding path program 1 times [2021-10-21 20:02:26,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:26,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063170905] [2021-10-21 20:02:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:26,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:26,366 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:26,415 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:27,124 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:02:27,125 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:02:27,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:02:27,125 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:02:27,125 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:02:27,126 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:27,126 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:02:27,127 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:02:27,127 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration2_Loop [2021-10-21 20:02:27,127 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:02:27,127 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:02:27,147 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 20:02:27,156 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 20:02:27,160 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 20:02:27,163 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 20:02:27,166 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 20:02:27,214 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:02:27,215 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:02:27,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:27,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:27,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:27,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:27,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:27,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 20:02:27,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:27,247 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_~j=0} Honda state: {rec2_~j=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:27,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:27,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:27,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:27,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:27,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:27,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:27,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 20:02:27,320 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:27,320 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret3=0} Honda state: {rec2_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:27,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:27,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:27,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:27,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:27,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:27,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:27,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 20:02:27,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:27,399 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#res=0} Honda state: {rec2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:27,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:27,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:27,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:27,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:27,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 20:02:27,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:27,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:27,484 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:27,484 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret4=0} Honda state: {rec2_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:27,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:27,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:27,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:27,530 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:27,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:27,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:27,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 20:02:27,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:27,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:27,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:27,636 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:27,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 20:02:27,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:02:27,643 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:27,691 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:02:27,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:27,737 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:02:27,737 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:02:27,737 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:02:27,737 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:02:27,737 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:02:27,737 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:27,737 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:02:27,737 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:02:27,738 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration2_Loop [2021-10-21 20:02:27,738 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:02:27,738 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:02:27,740 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 20:02:27,750 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 20:02:27,753 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 20:02:27,755 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 20:02:27,763 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 20:02:27,799 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:02:27,804 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:02:27,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:27,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:27,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:27,820 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 20:02:27,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:27,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:27,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:27,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:27,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:27,835 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:27,835 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:27,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 20:02:27,852 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:27,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:27,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:27,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:27,897 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:27,904 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 20:02:27,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 20:02:27,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:27,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:27,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:27,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:27,916 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:27,917 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:27,917 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:27,934 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:27,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:27,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:27,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:27,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:27,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 20:02:27,969 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 20:02:27,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:27,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:27,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:27,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:27,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:27,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:27,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:27,982 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:28,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:28,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:28,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:28,009 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:28,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 20:02:28,015 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 20:02:28,023 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:28,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:28,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:28,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:28,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:28,025 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:28,025 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:28,051 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:02:28,075 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 20:02:28,076 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:02:28,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:28,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:28,091 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:28,100 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:02:28,101 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:02:28,101 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:02:28,101 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#in~j) = 1*rec2_#in~j Supporting invariants [] [2021-10-21 20:02:28,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 20:02:28,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:28,142 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:02:28,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:28,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:02:28,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:28,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 20:02:28,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-21 20:02:28,608 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2021-10-21 20:02:28,609 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 8 Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:28,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:29,052 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 8. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Result 101 states and 147 transitions. Complement of second has 42 states. [2021-10-21 20:02:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-10-21 20:02:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 36 transitions. [2021-10-21 20:02:29,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 2 letters. Loop has 24 letters. [2021-10-21 20:02:29,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:29,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 26 letters. Loop has 24 letters. [2021-10-21 20:02:29,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:29,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 2 letters. Loop has 48 letters. [2021-10-21 20:02:29,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:29,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 147 transitions. [2021-10-21 20:02:29,090 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2021-10-21 20:02:29,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 89 states and 135 transitions. [2021-10-21 20:02:29,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-10-21 20:02:29,105 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-21 20:02:29,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 135 transitions. [2021-10-21 20:02:29,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:02:29,108 INFO L681 BuchiCegarLoop]: Abstraction has 89 states and 135 transitions. [2021-10-21 20:02:29,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 135 transitions. [2021-10-21 20:02:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 62. [2021-10-21 20:02:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (41), 18 states have call predecessors, (41), 16 states have call successors, (41) [2021-10-21 20:02:29,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 98 transitions. [2021-10-21 20:02:29,147 INFO L704 BuchiCegarLoop]: Abstraction has 62 states and 98 transitions. [2021-10-21 20:02:29,147 INFO L587 BuchiCegarLoop]: Abstraction has 62 states and 98 transitions. [2021-10-21 20:02:29,147 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:02:29,147 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 98 transitions. [2021-10-21 20:02:29,157 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2021-10-21 20:02:29,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:29,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:29,158 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:29,159 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 20:02:29,159 INFO L791 eck$LassoCheckResult]: Stem: 343#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 340#L25 call main_#t~ret6 := rec2(main_~x~0);< 362#rec2ENTRY ~j := #in~j; 373#L18 assume !(~j <= 0); 370#L20 call #t~ret3 := rec1(~j);< 382#rec1ENTRY ~i := #in~i; 374#L12 assume !(~i <= 0); 347#L14 call #t~ret0 := rec1(~i - 2);< 363#rec1ENTRY [2021-10-21 20:02:29,159 INFO L793 eck$LassoCheckResult]: Loop: 363#rec1ENTRY ~i := #in~i; 376#L12 assume !(~i <= 0); 345#L14 call #t~ret0 := rec1(~i - 2);< 363#rec1ENTRY [2021-10-21 20:02:29,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:29,160 INFO L82 PathProgramCache]: Analyzing trace with hash 874549579, now seen corresponding path program 1 times [2021-10-21 20:02:29,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:29,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322388574] [2021-10-21 20:02:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:29,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,176 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,183 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:29,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:29,189 INFO L82 PathProgramCache]: Analyzing trace with hash 29941, now seen corresponding path program 1 times [2021-10-21 20:02:29,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:29,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915452867] [2021-10-21 20:02:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:29,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,198 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,224 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:29,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:29,225 INFO L82 PathProgramCache]: Analyzing trace with hash 434890603, now seen corresponding path program 2 times [2021-10-21 20:02:29,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:29,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911920226] [2021-10-21 20:02:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:29,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,233 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:29,246 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:29,305 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:02:29,305 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:02:29,305 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:02:29,305 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:02:29,305 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:02:29,305 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:29,306 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:02:29,306 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:02:29,306 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration3_Loop [2021-10-21 20:02:29,306 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:02:29,306 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:02:29,308 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 20:02:29,310 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 20:02:29,312 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 20:02:29,315 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 20:02:29,317 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 20:02:29,323 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 20:02:29,361 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:02:29,362 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:02:29,364 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:29,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:29,368 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:29,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:29,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:29,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 20:02:29,400 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:29,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:29,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:29,444 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:29,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:29,447 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:29,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:29,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:29,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 20:02:29,483 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:29,484 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:29,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:29,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:29,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:29,530 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:29,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:29,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:29,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 20:02:29,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:29,564 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:29,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:29,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:29,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:29,610 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:29,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:29,617 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:29,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 20:02:29,639 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:29,640 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:29,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:29,682 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:29,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:29,687 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:29,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 20:02:29,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:29,695 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:29,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:29,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:29,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:29,758 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:29,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-21 20:02:29,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:02:29,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:29,895 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:02:29,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:29,897 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:02:29,898 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:02:29,898 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:02:29,898 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:02:29,898 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:02:29,898 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:29,898 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:02:29,898 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:02:29,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration3_Loop [2021-10-21 20:02:29,898 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:02:29,898 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:02:29,899 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 20:02:29,907 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 20:02:29,910 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 20:02:29,914 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 20:02:29,921 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 20:02:29,924 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 20:02:29,964 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:02:29,964 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:02:29,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:29,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:29,965 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:29,976 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 20:02:29,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:29,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:29,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:29,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:29,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:29,989 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:29,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:29,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 20:02:30,003 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:30,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:30,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:30,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:30,045 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:30,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 20:02:30,061 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 20:02:30,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:30,072 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:30,072 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:30,073 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:30,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:30,074 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:30,074 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:30,085 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:30,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:30,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:30,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:30,130 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:30,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 20:02:30,144 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 20:02:30,156 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:30,156 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:30,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:30,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:30,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:30,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:30,158 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:30,171 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:30,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:30,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:30,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:30,218 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:30,223 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 20:02:30,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:30,234 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:30,234 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:30,234 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:30,234 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:30,237 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:30,238 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:30,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-21 20:02:30,255 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:02:30,259 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 20:02:30,259 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 20:02:30,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:30,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:30,262 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:30,268 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:02:30,268 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:02:30,268 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:02:30,269 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2021-10-21 20:02:30,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-21 20:02:30,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-10-21 20:02:30,312 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:02:30,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:30,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:02:30,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:30,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:02:30,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:30,451 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 20:02:30,452 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 20:02:30,452 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 62 states and 98 transitions. cyclomatic complexity: 40 Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:02:30,532 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 62 states and 98 transitions. cyclomatic complexity: 40. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 108 states and 165 transitions. Complement of second has 13 states. [2021-10-21 20:02:30,533 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 20:02:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:02:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-10-21 20:02:30,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-21 20:02:30,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:30,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 11 letters. Loop has 3 letters. [2021-10-21 20:02:30,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:30,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 6 letters. [2021-10-21 20:02:30,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:30,535 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 108 states and 165 transitions. [2021-10-21 20:02:30,540 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2021-10-21 20:02:30,546 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 108 states to 96 states and 153 transitions. [2021-10-21 20:02:30,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-10-21 20:02:30,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-10-21 20:02:30,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 153 transitions. [2021-10-21 20:02:30,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:02:30,548 INFO L681 BuchiCegarLoop]: Abstraction has 96 states and 153 transitions. [2021-10-21 20:02:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states and 153 transitions. [2021-10-21 20:02:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2021-10-21 20:02:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.150943396226415) internal successors, (61), 59 states have internal predecessors, (61), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (56), 18 states have call predecessors, (56), 22 states have call successors, (56) [2021-10-21 20:02:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 143 transitions. [2021-10-21 20:02:30,563 INFO L704 BuchiCegarLoop]: Abstraction has 92 states and 143 transitions. [2021-10-21 20:02:30,563 INFO L587 BuchiCegarLoop]: Abstraction has 92 states and 143 transitions. [2021-10-21 20:02:30,563 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:02:30,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 92 states and 143 transitions. [2021-10-21 20:02:30,566 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2021-10-21 20:02:30,566 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:30,566 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:30,567 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:30,567 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 20:02:30,568 INFO L791 eck$LassoCheckResult]: Stem: 579#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 575#L25 call main_#t~ret6 := rec2(main_~x~0);< 588#rec2ENTRY ~j := #in~j; 653#L18 assume !(~j <= 0); 581#L20 call #t~ret3 := rec1(~j);< 661#rec1ENTRY ~i := #in~i; 660#L12 assume !(~i <= 0); 619#L14 call #t~ret0 := rec1(~i - 2);< 659#rec1ENTRY ~i := #in~i; 663#L12 assume ~i <= 0;#res := 0; 658#rec1FINAL assume true; 651#rec1EXIT >#27#return; 593#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 590#rec1ENTRY [2021-10-21 20:02:30,568 INFO L793 eck$LassoCheckResult]: Loop: 590#rec1ENTRY ~i := #in~i; 662#L12 assume !(~i <= 0); 607#L14 call #t~ret0 := rec1(~i - 2);< 590#rec1ENTRY [2021-10-21 20:02:30,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1317996508, now seen corresponding path program 1 times [2021-10-21 20:02:30,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:30,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174245389] [2021-10-21 20:02:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:30,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:30,578 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:30,586 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:30,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:30,587 INFO L82 PathProgramCache]: Analyzing trace with hash 29941, now seen corresponding path program 2 times [2021-10-21 20:02:30,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:30,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553250610] [2021-10-21 20:02:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:30,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:30,592 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:30,600 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:30,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:30,601 INFO L82 PathProgramCache]: Analyzing trace with hash -157050054, now seen corresponding path program 2 times [2021-10-21 20:02:30,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:30,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750872523] [2021-10-21 20:02:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:30,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:30,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:30,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-21 20:02:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:02:30,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:02:30,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750872523] [2021-10-21 20:02:30,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750872523] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:02:30,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:02:30,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:02:30,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511241626] [2021-10-21 20:02:30,706 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:02:30,707 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:02:30,707 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:02:30,707 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:02:30,707 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:02:30,707 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:30,707 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:02:30,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:02:30,707 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration4_Loop [2021-10-21 20:02:30,708 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:02:30,708 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:02:30,709 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 20:02:30,711 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 20:02:30,714 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 20:02:30,716 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 20:02:30,722 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 20:02:30,725 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 20:02:30,753 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:02:30,755 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:02:30,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:30,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:30,756 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:30,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-21 20:02:30,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:30,758 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:30,766 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:30,766 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:30,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:30,786 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:30,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:30,788 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:30,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-21 20:02:30,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:30,789 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:30,797 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:30,797 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:30,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:30,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:30,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:30,819 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:30,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-21 20:02:30,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:30,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:30,828 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:30,829 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:30,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-21 20:02:30,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:30,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:30,851 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:30,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-21 20:02:30,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:30,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:30,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:30,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:30,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:30,885 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:30,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-21 20:02:30,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:02:30,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:30,966 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:02:30,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:30,969 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:02:30,969 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:02:30,969 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:02:30,970 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:02:30,970 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:02:30,970 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:30,970 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:02:30,970 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:02:30,970 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration4_Loop [2021-10-21 20:02:30,970 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:02:30,970 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:02:30,971 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 20:02:30,985 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 20:02:30,988 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 20:02:30,995 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 20:02:30,998 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 20:02:31,001 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 20:02:31,036 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:02:31,036 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:02:31,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:31,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:31,037 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:31,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-21 20:02:31,049 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 20:02:31,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:31,060 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:31,060 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:31,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:31,061 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:31,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:31,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:31,074 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:31,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:31,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:31,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:31,119 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:31,124 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 20:02:31,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:31,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:31,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:31,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:31,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:31,138 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:31,138 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:31,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-21 20:02:31,151 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:31,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:31,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:31,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:31,198 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:31,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-21 20:02:31,200 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 20:02:31,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:31,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:31,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:31,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:31,209 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:31,210 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:31,210 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:31,212 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:02:31,214 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 20:02:31,214 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 20:02:31,215 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:31,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:31,216 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:31,218 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:02:31,218 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:02:31,218 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:02:31,218 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2021-10-21 20:02:31,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-21 20:02:31,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:31,247 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:02:31,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:31,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:02:31,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:31,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:02:31,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:31,521 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 20:02:31,521 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-21 20:02:31,522 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 92 states and 143 transitions. cyclomatic complexity: 57 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:02:31,624 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 92 states and 143 transitions. cyclomatic complexity: 57. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 132 states and 207 transitions. Complement of second has 14 states. [2021-10-21 20:02:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 20:02:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:02:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2021-10-21 20:02:31,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 13 letters. Loop has 3 letters. [2021-10-21 20:02:31,628 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:31,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 16 letters. Loop has 3 letters. [2021-10-21 20:02:31,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:31,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 13 letters. Loop has 6 letters. [2021-10-21 20:02:31,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:31,629 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132 states and 207 transitions. [2021-10-21 20:02:31,636 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2021-10-21 20:02:31,642 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132 states to 120 states and 195 transitions. [2021-10-21 20:02:31,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2021-10-21 20:02:31,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2021-10-21 20:02:31,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 195 transitions. [2021-10-21 20:02:31,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:02:31,644 INFO L681 BuchiCegarLoop]: Abstraction has 120 states and 195 transitions. [2021-10-21 20:02:31,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states and 195 transitions. [2021-10-21 20:02:31,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2021-10-21 20:02:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 75 states have internal predecessors, (79), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (74), 22 states have call predecessors, (74), 28 states have call successors, (74) [2021-10-21 20:02:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 185 transitions. [2021-10-21 20:02:31,664 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 185 transitions. [2021-10-21 20:02:31,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:02:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:02:31,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:02:31,666 INFO L87 Difference]: Start difference. First operand 116 states and 185 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:02:31,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:02:31,743 INFO L93 Difference]: Finished difference Result 129 states and 195 transitions. [2021-10-21 20:02:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:02:31,746 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 129 states and 195 transitions. [2021-10-21 20:02:31,750 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-10-21 20:02:31,756 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 129 states to 127 states and 193 transitions. [2021-10-21 20:02:31,756 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2021-10-21 20:02:31,757 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-10-21 20:02:31,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 193 transitions. [2021-10-21 20:02:31,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:02:31,757 INFO L681 BuchiCegarLoop]: Abstraction has 127 states and 193 transitions. [2021-10-21 20:02:31,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states and 193 transitions. [2021-10-21 20:02:31,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 104. [2021-10-21 20:02:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 65 states have internal predecessors, (67), 30 states have call successors, (30), 16 states have call predecessors, (30), 15 states have return successors, (60), 22 states have call predecessors, (60), 26 states have call successors, (60) [2021-10-21 20:02:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 157 transitions. [2021-10-21 20:02:31,773 INFO L704 BuchiCegarLoop]: Abstraction has 104 states and 157 transitions. [2021-10-21 20:02:31,773 INFO L587 BuchiCegarLoop]: Abstraction has 104 states and 157 transitions. [2021-10-21 20:02:31,773 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 20:02:31,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 157 transitions. [2021-10-21 20:02:31,776 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-10-21 20:02:31,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:31,776 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:31,777 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:31,777 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:31,777 INFO L791 eck$LassoCheckResult]: Stem: 1145#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 1141#L25 call main_#t~ret6 := rec2(main_~x~0);< 1168#rec2ENTRY ~j := #in~j; 1207#L18 assume !(~j <= 0); 1169#L20 call #t~ret3 := rec1(~j);< 1206#rec1ENTRY ~i := #in~i; 1205#L12 assume !(~i <= 0); 1152#L14 call #t~ret0 := rec1(~i - 2);< 1203#rec1ENTRY ~i := #in~i; 1201#L12 assume !(~i <= 0); 1149#L14 call #t~ret0 := rec1(~i - 2);< 1200#rec1ENTRY ~i := #in~i; 1202#L12 assume ~i <= 0;#res := 0; 1241#rec1FINAL assume true; 1240#rec1EXIT >#27#return; 1173#L14-1 [2021-10-21 20:02:31,778 INFO L793 eck$LassoCheckResult]: Loop: 1173#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1174#rec1ENTRY ~i := #in~i; 1189#L12 assume ~i <= 0;#res := 0; 1177#rec1FINAL assume true; 1179#rec1EXIT >#29#return; 1150#L14-2 call #t~ret2 := rec1(#t~ret1);< 1171#rec1ENTRY ~i := #in~i; 1215#L12 assume !(~i <= 0); 1153#L14 call #t~ret0 := rec1(~i - 2);< 1171#rec1ENTRY ~i := #in~i; 1215#L12 assume ~i <= 0;#res := 0; 1235#rec1FINAL assume true; 1234#rec1EXIT >#27#return; 1173#L14-1 [2021-10-21 20:02:31,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:31,778 INFO L82 PathProgramCache]: Analyzing trace with hash -377207200, now seen corresponding path program 1 times [2021-10-21 20:02:31,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:31,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906265406] [2021-10-21 20:02:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:31,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:31,795 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:31,820 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:31,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:31,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1306212703, now seen corresponding path program 1 times [2021-10-21 20:02:31,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:31,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761395910] [2021-10-21 20:02:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:31,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:02:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 20:02:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:02:31,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:02:31,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761395910] [2021-10-21 20:02:31,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761395910] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:02:31,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276632746] [2021-10-21 20:02:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:31,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:02:31,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:31,927 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:02:31,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-21 20:02:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:31,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:02:31,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:02:32,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276632746] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:02:32,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:02:32,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-10-21 20:02:32,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916085677] [2021-10-21 20:02:32,035 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:02:32,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:02:32,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:02:32,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:02:32,036 INFO L87 Difference]: Start difference. First operand 104 states and 157 transitions. cyclomatic complexity: 59 Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:02:32,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:02:32,084 INFO L93 Difference]: Finished difference Result 119 states and 173 transitions. [2021-10-21 20:02:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:02:32,085 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 173 transitions. [2021-10-21 20:02:32,088 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2021-10-21 20:02:32,094 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 114 states and 164 transitions. [2021-10-21 20:02:32,094 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2021-10-21 20:02:32,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2021-10-21 20:02:32,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 164 transitions. [2021-10-21 20:02:32,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:02:32,095 INFO L681 BuchiCegarLoop]: Abstraction has 114 states and 164 transitions. [2021-10-21 20:02:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 164 transitions. [2021-10-21 20:02:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2021-10-21 20:02:32,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 68 states have internal predecessors, (70), 32 states have call successors, (32), 18 states have call predecessors, (32), 16 states have return successors, (59), 24 states have call predecessors, (59), 28 states have call successors, (59) [2021-10-21 20:02:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2021-10-21 20:02:32,112 INFO L704 BuchiCegarLoop]: Abstraction has 111 states and 161 transitions. [2021-10-21 20:02:32,112 INFO L587 BuchiCegarLoop]: Abstraction has 111 states and 161 transitions. [2021-10-21 20:02:32,112 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 20:02:32,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 161 transitions. [2021-10-21 20:02:32,114 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2021-10-21 20:02:32,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:32,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:32,116 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:32,116 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 20:02:32,116 INFO L791 eck$LassoCheckResult]: Stem: 1427#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 1423#L25 call main_#t~ret6 := rec2(main_~x~0);< 1443#rec2ENTRY ~j := #in~j; 1498#L18 assume !(~j <= 0); 1480#L20 call #t~ret3 := rec1(~j);< 1496#rec1ENTRY ~i := #in~i; 1490#L12 assume !(~i <= 0); 1434#L14 call #t~ret0 := rec1(~i - 2);< 1486#rec1ENTRY ~i := #in~i; 1483#L12 assume !(~i <= 0); 1431#L14 call #t~ret0 := rec1(~i - 2);< 1482#rec1ENTRY ~i := #in~i; 1485#L12 assume ~i <= 0;#res := 0; 1461#rec1FINAL assume true; 1462#rec1EXIT >#27#return; 1457#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1458#rec1ENTRY ~i := #in~i; 1501#L12 assume ~i <= 0;#res := 0; 1500#rec1FINAL assume true; 1487#rec1EXIT >#29#return; 1444#L14-2 call #t~ret2 := rec1(#t~ret1);< 1445#rec1ENTRY ~i := #in~i; 1471#L12 assume ~i <= 0;#res := 0; 1472#rec1FINAL assume true; 1464#rec1EXIT >#31#return; 1465#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 1492#rec1FINAL assume true; 1488#rec1EXIT >#27#return; 1435#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1475#rec1ENTRY [2021-10-21 20:02:32,116 INFO L793 eck$LassoCheckResult]: Loop: 1475#rec1ENTRY ~i := #in~i; 1503#L12 assume !(~i <= 0); 1432#L14 call #t~ret0 := rec1(~i - 2);< 1475#rec1ENTRY [2021-10-21 20:02:32,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:32,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1733863270, now seen corresponding path program 1 times [2021-10-21 20:02:32,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:32,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449443305] [2021-10-21 20:02:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:32,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:32,129 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:32,143 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:32,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:32,144 INFO L82 PathProgramCache]: Analyzing trace with hash 29941, now seen corresponding path program 3 times [2021-10-21 20:02:32,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:32,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943412484] [2021-10-21 20:02:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:32,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:32,149 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:32,152 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:32,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:32,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2050992272, now seen corresponding path program 2 times [2021-10-21 20:02:32,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:32,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954057479] [2021-10-21 20:02:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:32,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-21 20:02:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:32,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-21 20:02:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:32,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-21 20:02:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-21 20:02:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-21 20:02:32,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:02:32,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954057479] [2021-10-21 20:02:32,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954057479] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:02:32,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348577160] [2021-10-21 20:02:32,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:02:32,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:02:32,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:32,255 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:02:32,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-21 20:02:32,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:02:32,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:02:32,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:02:32,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-21 20:02:32,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348577160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:02:32,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:02:32,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-21 20:02:32,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549474612] [2021-10-21 20:02:32,536 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:02:32,537 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:02:32,537 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:02:32,537 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:02:32,537 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:02:32,537 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:32,537 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:02:32,538 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:02:32,538 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration6_Loop [2021-10-21 20:02:32,538 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:02:32,538 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:02:32,540 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 20:02:32,543 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 20:02:32,546 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 20:02:32,548 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 20:02:32,554 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 20:02:32,557 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 20:02:32,590 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:02:32,591 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:02:32,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:32,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:32,593 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:32,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-21 20:02:32,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:32,595 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:32,604 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:32,605 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:32,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:32,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:32,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:32,637 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:32,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-21 20:02:32,639 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:32,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:32,649 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:32,649 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:32,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-21 20:02:32,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:32,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:32,675 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:32,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-21 20:02:32,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:32,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:32,699 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:32,700 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:32,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-10-21 20:02:32,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:32,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:32,725 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:32,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-21 20:02:32,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:32,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:32,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-10-21 20:02:32,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:32,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:32,761 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:32,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-21 20:02:32,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:02:32,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:32,835 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:02:32,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:32,838 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:02:32,838 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:02:32,838 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:02:32,838 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:02:32,838 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:02:32,838 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:32,838 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:02:32,838 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:02:32,838 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration6_Loop [2021-10-21 20:02:32,838 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:02:32,838 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:02:32,839 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 20:02:32,852 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 20:02:32,854 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 20:02:32,860 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 20:02:32,861 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 20:02:32,863 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 20:02:32,895 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:02:32,895 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:02:32,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:32,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:32,897 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:32,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-21 20:02:32,904 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 20:02:32,911 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:32,911 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:32,911 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:32,911 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:32,911 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:32,912 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:32,912 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:32,928 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:32,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:32,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:32,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:32,949 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:32,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-21 20:02:32,951 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 20:02:32,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:32,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:32,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:32,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:32,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:32,959 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:32,959 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:32,963 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:32,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-21 20:02:32,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:32,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:32,983 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:32,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-21 20:02:32,985 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 20:02:32,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:32,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:32,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:32,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:32,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:32,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:32,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:33,006 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:02:33,008 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 20:02:33,008 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 20:02:33,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:33,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:33,009 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:33,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-21 20:02:33,010 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:02:33,010 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:02:33,010 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:02:33,011 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2021-10-21 20:02:33,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:33,031 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:02:33,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:33,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:02:33,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:33,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:33,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:02:33,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:33,712 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 20:02:33,714 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-21 20:02:33,714 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 161 transitions. cyclomatic complexity: 56 Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:33,786 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 161 transitions. cyclomatic complexity: 56. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 128 states and 179 transitions. Complement of second has 7 states. [2021-10-21 20:02:33,786 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 20:02:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-21 20:02:33,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 29 letters. Loop has 3 letters. [2021-10-21 20:02:33,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:33,790 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:02:33,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:33,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:02:33,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:34,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:02:34,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:34,426 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 20:02:34,427 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-21 20:02:34,427 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 161 transitions. cyclomatic complexity: 56 Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:34,489 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 161 transitions. cyclomatic complexity: 56. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 128 states and 179 transitions. Complement of second has 7 states. [2021-10-21 20:02:34,490 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 20:02:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:34,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-21 20:02:34,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 29 letters. Loop has 3 letters. [2021-10-21 20:02:34,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:34,491 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:02:34,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:34,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:02:34,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:35,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:02:35,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:35,061 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 20:02:35,062 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 3 loop predicates [2021-10-21 20:02:35,062 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 161 transitions. cyclomatic complexity: 56 Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:35,153 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 161 transitions. cyclomatic complexity: 56. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 156 states and 218 transitions. Complement of second has 13 states. [2021-10-21 20:02:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 20:02:35,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2021-10-21 20:02:35,155 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 29 letters. Loop has 3 letters. [2021-10-21 20:02:35,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:35,155 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 32 letters. Loop has 3 letters. [2021-10-21 20:02:35,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:35,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 29 letters. Loop has 6 letters. [2021-10-21 20:02:35,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:35,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 218 transitions. [2021-10-21 20:02:35,160 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2021-10-21 20:02:35,165 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 138 states and 200 transitions. [2021-10-21 20:02:35,165 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2021-10-21 20:02:35,165 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-21 20:02:35,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 138 states and 200 transitions. [2021-10-21 20:02:35,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:02:35,166 INFO L681 BuchiCegarLoop]: Abstraction has 138 states and 200 transitions. [2021-10-21 20:02:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states and 200 transitions. [2021-10-21 20:02:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 119. [2021-10-21 20:02:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 74 states have internal predecessors, (78), 32 states have call successors, (32), 20 states have call predecessors, (32), 18 states have return successors, (59), 24 states have call predecessors, (59), 28 states have call successors, (59) [2021-10-21 20:02:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 169 transitions. [2021-10-21 20:02:35,180 INFO L704 BuchiCegarLoop]: Abstraction has 119 states and 169 transitions. [2021-10-21 20:02:35,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:02:35,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:02:35,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:02:35,181 INFO L87 Difference]: Start difference. First operand 119 states and 169 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-21 20:02:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:02:35,234 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2021-10-21 20:02:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:02:35,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 115 transitions. [2021-10-21 20:02:35,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 20:02:35,238 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 62 states and 74 transitions. [2021-10-21 20:02:35,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-21 20:02:35,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-21 20:02:35,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 74 transitions. [2021-10-21 20:02:35,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:02:35,239 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 74 transitions. [2021-10-21 20:02:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 74 transitions. [2021-10-21 20:02:35,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 53. [2021-10-21 20:02:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.125) internal successors, (36), 35 states have internal predecessors, (36), 14 states have call successors, (14), 10 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-21 20:02:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2021-10-21 20:02:35,245 INFO L704 BuchiCegarLoop]: Abstraction has 53 states and 64 transitions. [2021-10-21 20:02:35,245 INFO L587 BuchiCegarLoop]: Abstraction has 53 states and 64 transitions. [2021-10-21 20:02:35,245 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 20:02:35,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 53 states and 64 transitions. [2021-10-21 20:02:35,246 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 20:02:35,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:02:35,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:02:35,247 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:02:35,247 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 20:02:35,248 INFO L791 eck$LassoCheckResult]: Stem: 2652#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 2650#L25 call main_#t~ret6 := rec2(main_~x~0);< 2659#rec2ENTRY ~j := #in~j; 2668#L18 assume !(~j <= 0); 2682#L20 call #t~ret3 := rec1(~j);< 2696#rec1ENTRY ~i := #in~i; 2695#L12 assume !(~i <= 0); 2656#L14 call #t~ret0 := rec1(~i - 2);< 2693#rec1ENTRY ~i := #in~i; 2698#L12 assume ~i <= 0;#res := 0; 2697#rec1FINAL assume true; 2666#rec1EXIT >#27#return; 2667#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 2663#rec1ENTRY ~i := #in~i; 2691#L12 assume ~i <= 0;#res := 0; 2690#rec1FINAL assume true; 2688#rec1EXIT >#29#return; 2686#L14-2 call #t~ret2 := rec1(#t~ret1);< 2661#rec1ENTRY ~i := #in~i; 2689#L12 assume ~i <= 0;#res := 0; 2687#rec1FINAL assume true; 2685#rec1EXIT >#31#return; 2684#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 2683#rec1FINAL assume true; 2681#rec1EXIT >#33#return; 2649#L20-1 call #t~ret4 := rec2(#t~ret3 - 1);< 2651#rec2ENTRY ~j := #in~j; 2670#L18 assume !(~j <= 0); 2671#L20 call #t~ret3 := rec1(~j);< 2677#rec1ENTRY [2021-10-21 20:02:35,248 INFO L793 eck$LassoCheckResult]: Loop: 2677#rec1ENTRY ~i := #in~i; 2673#L12 assume !(~i <= 0); 2674#L14 call #t~ret0 := rec1(~i - 2);< 2677#rec1ENTRY [2021-10-21 20:02:35,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:35,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1852176490, now seen corresponding path program 2 times [2021-10-21 20:02:35,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:35,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088088996] [2021-10-21 20:02:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:35,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:35,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 20:02:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:35,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-21 20:02:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-21 20:02:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:35,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-21 20:02:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-21 20:02:35,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:02:35,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088088996] [2021-10-21 20:02:35,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088088996] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:02:35,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493301677] [2021-10-21 20:02:35,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:02:35,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:02:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:35,349 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:02:35,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-21 20:02:35,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:02:35,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:02:35,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:02:35,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-21 20:02:35,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493301677] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:02:35,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:02:35,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-21 20:02:35,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181875089] [2021-10-21 20:02:35,687 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:02:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:35,688 INFO L82 PathProgramCache]: Analyzing trace with hash 29941, now seen corresponding path program 4 times [2021-10-21 20:02:35,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:35,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844256497] [2021-10-21 20:02:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:35,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:35,695 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:35,701 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:35,747 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:02:35,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:02:35,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:02:35,748 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:02:35,748 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:02:35,748 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:35,748 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:02:35,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:02:35,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration7_Loop [2021-10-21 20:02:35,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:02:35,749 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:02:35,749 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 20:02:35,752 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 20:02:35,755 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 20:02:35,758 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 20:02:35,760 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 20:02:35,767 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 20:02:35,801 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:02:35,801 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:02:35,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:35,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:35,803 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:35,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:35,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:35,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-21 20:02:35,828 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:35,828 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:35,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-10-21 20:02:35,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:35,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:35,854 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:35,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-21 20:02:35,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:35,858 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:35,868 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:35,868 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:35,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:35,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:35,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:35,893 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:35,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-21 20:02:35,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:35,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:35,904 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:35,904 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:35,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:35,928 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:35,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:35,935 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:35,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:35,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:35,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-21 20:02:35,947 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:02:35,947 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:02:35,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:35,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:35,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:35,971 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:35,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-21 20:02:35,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:02:35,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:36,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-10-21 20:02:36,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:36,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:36,006 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:36,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:02:36,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:02:36,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-21 20:02:36,046 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:02:36,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:36,049 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:02:36,049 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:02:36,049 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:02:36,049 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:02:36,049 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:02:36,050 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:36,050 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:02:36,050 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:02:36,050 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration7_Loop [2021-10-21 20:02:36,050 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:02:36,050 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:02:36,051 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 20:02:36,057 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 20:02:36,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:02:36,063 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 20:02:36,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:02:36,072 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 20:02:36,104 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:02:36,104 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:02:36,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:36,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:36,105 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:36,115 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 20:02:36,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:36,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:36,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:36,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:36,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:36,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:36,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:36,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-21 20:02:36,143 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:36,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:36,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:36,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:36,185 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:36,187 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 20:02:36,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:36,199 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:36,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:36,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:36,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:36,202 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:36,202 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:36,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-21 20:02:36,214 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:36,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:36,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:36,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:36,260 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:36,262 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 20:02:36,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:36,272 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:36,272 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:36,272 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:36,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:36,274 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:36,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:36,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-21 20:02:36,295 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:36,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:36,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:36,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:36,337 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:36,339 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 20:02:36,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:36,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:36,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:36,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:36,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:36,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:36,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:36,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-21 20:02:36,363 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:02:36,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-10-21 20:02:36,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:36,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:36,387 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:36,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-21 20:02:36,390 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 20:02:36,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:02:36,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:02:36,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:02:36,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:02:36,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:02:36,399 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:02:36,399 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:02:36,412 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:02:36,414 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 20:02:36,415 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 20:02:36,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:02:36,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:36,422 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:36,425 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:02:36,426 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:02:36,426 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:02:36,426 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2021-10-21 20:02:36,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-21 20:02:36,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:36,464 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:02:36,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:36,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:02:36,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:36,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:37,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:02:37,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:37,061 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 20:02:37,063 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-21 20:02:37,063 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 53 states and 64 transitions. cyclomatic complexity: 15 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:37,141 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 53 states and 64 transitions. cyclomatic complexity: 15. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 63 states and 75 transitions. Complement of second has 13 states. [2021-10-21 20:02:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 20:02:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2021-10-21 20:02:37,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 29 letters. Loop has 3 letters. [2021-10-21 20:02:37,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:37,144 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:02:37,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:37,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:02:37,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:37,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:02:37,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:37,690 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 20:02:37,691 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-21 20:02:37,692 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 53 states and 64 transitions. cyclomatic complexity: 15 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:37,762 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 53 states and 64 transitions. cyclomatic complexity: 15. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 63 states and 75 transitions. Complement of second has 13 states. [2021-10-21 20:02:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 20:02:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2021-10-21 20:02:37,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 29 letters. Loop has 3 letters. [2021-10-21 20:02:37,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:37,764 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:02:37,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:37,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:02:37,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:38,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:02:38,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:38,279 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 20:02:38,283 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 3 loop predicates [2021-10-21 20:02:38,284 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 53 states and 64 transitions. cyclomatic complexity: 15 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:38,377 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 53 states and 64 transitions. cyclomatic complexity: 15. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 77 states and 89 transitions. Complement of second has 13 states. [2021-10-21 20:02:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 20:02:38,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:02:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2021-10-21 20:02:38,379 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 29 letters. Loop has 3 letters. [2021-10-21 20:02:38,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:38,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 32 letters. Loop has 3 letters. [2021-10-21 20:02:38,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:38,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 29 letters. Loop has 6 letters. [2021-10-21 20:02:38,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:02:38,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 89 transitions. [2021-10-21 20:02:38,383 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:02:38,384 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 0 states and 0 transitions. [2021-10-21 20:02:38,384 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 20:02:38,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 20:02:38,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 20:02:38,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:02:38,384 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:02:38,385 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:02:38,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:02:38,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:02:38,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:02:38,386 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-21 20:02:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:02:38,386 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-21 20:02:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:02:38,386 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-21 20:02:38,387 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:02:38,387 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:02:38,387 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 20:02:38,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 20:02:38,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 20:02:38,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:02:38,388 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:02:38,388 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:02:38,388 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:02:38,388 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-21 20:02:38,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:02:38,388 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:02:38,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 20:02:38,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:02:38 BoogieIcfgContainer [2021-10-21 20:02:38,396 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:02:38,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:02:38,397 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:02:38,398 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:02:38,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:25" (3/4) ... [2021-10-21 20:02:38,402 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:02:38,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:02:38,404 INFO L168 Benchmark]: Toolchain (without parser) took 13574.23 ms. Allocated memory was 88.1 MB in the beginning and 167.8 MB in the end (delta: 79.7 MB). Free memory was 51.7 MB in the beginning and 119.4 MB in the end (delta: -67.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:38,405 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 67.8 MB in the beginning and 67.8 MB in the end (delta: 43.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:02:38,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.32 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 51.5 MB in the beginning and 92.8 MB in the end (delta: -41.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:38,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.58 ms. Allocated memory is still 115.3 MB. Free memory was 92.8 MB in the beginning and 91.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:02:38,409 INFO L168 Benchmark]: Boogie Preprocessor took 21.31 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 90.5 MB in the end (delta: 853.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:38,410 INFO L168 Benchmark]: RCFGBuilder took 352.86 ms. Allocated memory is still 115.3 MB. Free memory was 90.5 MB in the beginning and 82.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:38,411 INFO L168 Benchmark]: BuchiAutomizer took 12877.09 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 82.1 MB in the beginning and 119.4 MB in the end (delta: -37.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:38,411 INFO L168 Benchmark]: Witness Printer took 4.97 ms. Allocated memory is still 167.8 MB. Free memory is still 119.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:02:38,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 67.8 MB in the beginning and 67.8 MB in the end (delta: 43.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.32 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 51.5 MB in the beginning and 92.8 MB in the end (delta: -41.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.58 ms. Allocated memory is still 115.3 MB. Free memory was 92.8 MB in the beginning and 91.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.31 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 90.5 MB in the end (delta: 853.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 352.86 ms. Allocated memory is still 115.3 MB. Free memory was 90.5 MB in the beginning and 82.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 12877.09 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 82.1 MB in the beginning and 119.4 MB in the end (delta: -37.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.97 ms. Allocated memory is still 167.8 MB. Free memory is still 119.4 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 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(j) and consists of 10 locations. One deterministic module has affine ranking function \old(i) and consists of 4 locations. One deterministic module has affine ranking function \old(i) and consists of 5 locations. One nondeterministic module has affine ranking function \old(i) and consists of 5 locations. One nondeterministic module has affine ranking function \old(i) and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.8s and 8 iterations. TraceHistogramMax:5. Analysis of lassos took 6.4s. Construction of modules took 0.4s. Büchi inclusion checks took 5.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 7. Automata minimization 156.1ms AutomataMinimizationTime, 8 MinimizatonAttempts, 89 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 111 states and ocurred in iteration 5. Nontrivial modules had stage [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 22/24 HoareTripleCheckerStatistics: 188 SDtfs, 184 SDslu, 311 SDs, 0 SdLazy, 314 SolverSat, 134 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 423.3ms Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf96 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq149 hnf94 smp100 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 20:02:38,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-21 20:02:38,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-21 20:02:38,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-21 20:02:39,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695ba8ae-7011-4339-8f0f-e2e2c7bedb3c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...