./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD --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 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:14:24,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:14:24,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:14:24,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:14:24,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:14:24,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:14:24,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:14:24,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:14:24,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:14:24,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:14:24,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:14:24,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:14:24,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:14:24,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:14:24,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:14:24,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:14:24,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:14:24,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:14:24,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:14:24,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:14:24,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:14:24,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:14:24,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:14:24,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:14:24,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:14:24,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:14:24,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:14:24,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:14:24,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:14:24,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:14:24,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:14:24,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:14:24,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:14:24,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:14:24,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:14:24,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:14:24,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:14:24,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:14:24,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:14:24,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:14:24,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:14:24,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:14:25,008 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:14:25,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:14:25,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:14:25,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:14:25,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:14:25,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:14:25,013 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:14:25,013 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:14:25,014 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:14:25,014 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:14:25,015 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:14:25,015 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:14:25,016 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:14:25,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:14:25,016 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:14:25,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:14:25,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:14:25,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:14:25,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:14:25,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:14:25,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:14:25,018 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:14:25,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:14:25,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:14:25,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:14:25,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:14:25,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:14:25,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:14:25,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:14:25,023 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:14:25,024 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_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a [2021-10-28 23:14:25,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:14:25,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:14:25,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:14:25,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:14:25,383 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:14:25,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2021-10-28 23:14:25,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/data/6d5f6380c/f0e12ebb460e4ab6a1c2178d274f3d77/FLAGc56b9f60a [2021-10-28 23:14:25,997 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:14:25,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2021-10-28 23:14:26,009 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/data/6d5f6380c/f0e12ebb460e4ab6a1c2178d274f3d77/FLAGc56b9f60a [2021-10-28 23:14:26,337 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/data/6d5f6380c/f0e12ebb460e4ab6a1c2178d274f3d77 [2021-10-28 23:14:26,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:14:26,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:14:26,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:14:26,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:14:26,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:14:26,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@208a8e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26, skipping insertion in model container [2021-10-28 23:14:26,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:14:26,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:14:26,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:14:26,610 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:14:26,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:14:26,639 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:14:26,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26 WrapperNode [2021-10-28 23:14:26,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:14:26,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:14:26,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:14:26,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:14:26,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:14:26,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:14:26,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:14:26,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:14:26,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:14:26,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:14:26,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:14:26,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:14:26,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26" (1/1) ... [2021-10-28 23:14:26,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:26,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:26,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:26,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:14:26,802 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-28 23:14:26,803 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-28 23:14:26,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:14:26,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:14:27,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:14:27,003 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 23:14:27,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:14:27 BoogieIcfgContainer [2021-10-28 23:14:27,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:14:27,010 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:14:27,010 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:14:27,015 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:14:27,016 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:14:27,017 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:14:26" (1/3) ... [2021-10-28 23:14:27,020 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78920f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:14:27, skipping insertion in model container [2021-10-28 23:14:27,020 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:14:27,020 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:26" (2/3) ... [2021-10-28 23:14:27,021 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78920f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:14:27, skipping insertion in model container [2021-10-28 23:14:27,021 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:14:27,021 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:14:27" (3/3) ... [2021-10-28 23:14:27,023 INFO L389 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_2b.c [2021-10-28 23:14:27,098 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:14:27,098 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:14:27,098 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:14:27,099 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:14:27,099 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:14:27,099 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:14:27,099 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:14:27,100 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:14:27,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:14:27,139 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:14:27,139 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:27,140 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:27,148 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 23:14:27,148 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:14:27,148 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:14:27,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:14:27,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:14:27,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:27,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:27,152 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 23:14:27,152 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:14:27,159 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 12#L20true assume !(main_~x~0 < 0); 11#L21true call main_#t~ret3 := g(main_~x~0);< 7#gENTRYtrue [2021-10-28 23:14:27,159 INFO L793 eck$LassoCheckResult]: Loop: 7#gENTRYtrue ~x := #in~x; 8#L12true assume !(0 == ~x); 6#L15true call #t~ret0 := g(~x - 1);< 7#gENTRYtrue [2021-10-28 23:14:27,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:27,166 INFO L85 PathProgramCache]: Analyzing trace with hash 39891, now seen corresponding path program 1 times [2021-10-28 23:14:27,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:27,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126981358] [2021-10-28 23:14:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:27,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:27,241 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:27,263 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:27,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:27,267 INFO L85 PathProgramCache]: Analyzing trace with hash 29936, now seen corresponding path program 1 times [2021-10-28 23:14:27,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:27,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25922628] [2021-10-28 23:14:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:27,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:27,279 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:27,285 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:27,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1188392926, now seen corresponding path program 1 times [2021-10-28 23:14:27,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:27,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084263789] [2021-10-28 23:14:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:27,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:27,302 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:27,312 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:27,501 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:27,502 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:27,502 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:27,503 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:27,503 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:14:27,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:27,503 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:27,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:27,504 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Loop [2021-10-28 23:14:27,504 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:27,504 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:27,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:27,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:27,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:27,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:27,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:27,646 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:27,647 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:14:27,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:27,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:27,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:27,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:14:27,681 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:27,681 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:27,722 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:27,722 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:27,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:27,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:27,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:27,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:27,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:14:27,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:27,762 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:27,781 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:27,782 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:27,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:27,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:27,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:27,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:27,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:14:27,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:27,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:27,832 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:27,832 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:27,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:27,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:27,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:27,888 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:27,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:14:27,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:27,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:27,903 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:27,903 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:27,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:27,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:27,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:27,958 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:27,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:27,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:27,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:14:28,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:28,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:28,054 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:28,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:14:28,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:14:28,057 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:28,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:28,112 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-4} Honda state: {g_#in~x=-4} Generalized eigenvectors: [{g_#in~x=0}, {g_#in~x=0}, {g_#in~x=-1}] Lambdas: [0, 5, 1] Nus: [0, 0] [2021-10-28 23:14:28,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:28,196 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:28,197 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:28,197 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:28,197 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:28,197 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:14:28,197 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,197 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:28,197 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:28,198 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2021-10-28 23:14:28,198 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:28,198 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:28,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,314 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:28,314 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:14:28,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:28,316 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:28,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:14:28,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:28,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:28,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:28,369 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:28,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-28 23:14:28,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:28,400 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:28,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:14:28,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:28,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:28,414 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:28,414 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:28,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:28,444 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:28,446 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:28,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:14:28,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:28,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:28,462 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:28,462 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:28,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:28,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:28,490 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:28,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:14:28,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:28,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:28,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:28,503 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:28,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-10-28 23:14:28,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:28,536 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:28,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:14:28,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:28,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:28,549 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:28,549 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4=0} Honda state: {ULTIMATE.start_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:28,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:28,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:28,584 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:28,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:14:28,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:28,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:28,611 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:28,612 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:28,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:28,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:28,642 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:28,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:14:28,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:28,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:28,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:28,697 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:28,698 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:28,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:14:28,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:14:28,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:28,778 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:14:28,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:28,784 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:28,784 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:28,785 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:28,785 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:28,785 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:14:28,785 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,785 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:28,785 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:28,785 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2021-10-28 23:14:28,785 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:28,785 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:28,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:28,889 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:28,894 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:14:28,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:28,897 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:28,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:14:28,906 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 [2021-10-28 23:14:28,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:28,918 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:28,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:28,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:28,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:28,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:28,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:28,930 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:28,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:28,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:28,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:28,978 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:28,987 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 [2021-10-28 23:14:28,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:28,999 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:28,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:28,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:28,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:29,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:14:29,001 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:29,002 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:29,021 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:29,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:29,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:29,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:29,070 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:29,077 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 [2021-10-28 23:14:29,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:29,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:29,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:29,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:29,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:29,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:14:29,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:29,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:29,109 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:29,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:29,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:29,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:29,155 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:29,163 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 [2021-10-28 23:14:29,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:29,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:29,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:29,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:29,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:29,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:29,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:29,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:14:29,189 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:29,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:29,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:29,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:29,223 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:29,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:14:29,229 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 [2021-10-28 23:14:29,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:29,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:29,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:29,239 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:29,239 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:29,240 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:29,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:29,270 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:29,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:29,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:29,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:29,296 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:29,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 23:14:29,298 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 [2021-10-28 23:14:29,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:29,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:29,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:29,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:29,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:29,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:29,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:29,315 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:29,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:29,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:29,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:29,343 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:29,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 23:14:29,346 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:29,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:29,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:29,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:29,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:29,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:29,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:29,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:29,385 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:29,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-10-28 23:14:29,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:29,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:29,411 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:29,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 23:14:29,414 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 [2021-10-28 23:14:29,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:29,434 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:29,435 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:29,435 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:29,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:29,436 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:29,436 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:29,445 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:29,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:29,480 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:29,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:29,484 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:29,487 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 [2021-10-28 23:14:29,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:29,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:29,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:29,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:29,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:29,500 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:29,500 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:29,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 23:14:29,521 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:29,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:29,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:29,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:29,553 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:29,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 23:14:29,562 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 [2021-10-28 23:14:29,572 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:29,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:29,572 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:14:29,572 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:29,589 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-28 23:14:29,589 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-28 23:14:29,619 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:14:29,652 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2021-10-28 23:14:29,652 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. [2021-10-28 23:14:29,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:29,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:29,673 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:29,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 23:14:29,731 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:14:29,778 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-10-28 23:14:29,778 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:14:29,779 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [1*g_#in~x >= 0] [2021-10-28 23:14:29,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:29,844 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-28 23:14:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:29,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:14:29,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:29,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:14:29,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:30,128 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 [2021-10-28 23:14:30,130 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:14:30,298 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 42 transitions. Complement of second has 13 states. [2021-10-28 23:14:30,299 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 [2021-10-28 23:14:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:14:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2021-10-28 23:14:30,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2021-10-28 23:14:30,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:30,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-28 23:14:30,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:30,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-28 23:14:30,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:30,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 42 transitions. [2021-10-28 23:14:30,325 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:14:30,337 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 25 transitions. [2021-10-28 23:14:30,339 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-28 23:14:30,340 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-28 23:14:30,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2021-10-28 23:14:30,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:30,343 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-10-28 23:14:30,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2021-10-28 23:14:30,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-10-28 23:14:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 23:14:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-10-28 23:14:30,382 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-10-28 23:14:30,382 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-10-28 23:14:30,383 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:14:30,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2021-10-28 23:14:30,387 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:14:30,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:30,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:30,389 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:30,389 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:30,390 INFO L791 eck$LassoCheckResult]: Stem: 114#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 115#L20 assume !(main_~x~0 < 0); 119#L21 call main_#t~ret3 := g(main_~x~0);< 125#gENTRY ~x := #in~x; 126#L12 assume !(0 == ~x); 118#L15 call #t~ret0 := g(~x - 1);< 123#gENTRY ~x := #in~x; 127#L12 assume 0 == ~x;#res := 1; 129#gFINAL assume true; 124#gEXIT >#22#return; 117#L15-1 [2021-10-28 23:14:30,390 INFO L793 eck$LassoCheckResult]: Loop: 117#L15-1 call #t~ret1 := g(1 + #t~ret0);< 122#gENTRY ~x := #in~x; 130#L12 assume !(0 == ~x); 120#L15 call #t~ret0 := g(~x - 1);< 122#gENTRY ~x := #in~x; 130#L12 assume 0 == ~x;#res := 1; 116#gFINAL assume true; 121#gEXIT >#22#return; 117#L15-1 [2021-10-28 23:14:30,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:30,391 INFO L85 PathProgramCache]: Analyzing trace with hash -54633169, now seen corresponding path program 1 times [2021-10-28 23:14:30,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:30,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430190766] [2021-10-28 23:14:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:30,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:30,417 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:30,445 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:30,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:30,447 INFO L85 PathProgramCache]: Analyzing trace with hash -243608724, now seen corresponding path program 1 times [2021-10-28 23:14:30,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:30,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915452306] [2021-10-28 23:14:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:30,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:30,463 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:30,478 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:30,481 INFO L85 PathProgramCache]: Analyzing trace with hash -791141734, now seen corresponding path program 1 times [2021-10-28 23:14:30,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:30,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734861868] [2021-10-28 23:14:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:30,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:30,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:14:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:30,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 23:14:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:30,648 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:14:30,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:14:30,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734861868] [2021-10-28 23:14:30,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734861868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:14:30,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251511875] [2021-10-28 23:14:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:30,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:14:30,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:30,651 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:14:30,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 23:14:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:30,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:14:30,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:14:30,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251511875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:14:30,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:14:30,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-28 23:14:30,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558170605] [2021-10-28 23:14:30,938 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:30,938 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:30,938 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:30,938 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:30,939 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:14:30,939 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:30,939 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:30,939 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:30,939 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2021-10-28 23:14:30,939 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:30,939 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:30,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:30,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:30,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:30,988 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:30,989 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:14:30,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:30,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:31,019 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:31,021 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:31,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:31,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 23:14:31,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:31,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:31,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:31,084 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:31,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 23:14:31,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:14:31,086 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:33,305 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:14:33,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:33,310 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:33,310 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:33,310 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:33,310 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:33,310 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:14:33,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:33,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:33,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:33,311 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2021-10-28 23:14:33,311 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:33,311 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:33,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:33,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:33,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:33,381 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:33,382 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:14:33,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:33,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:33,383 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:33,398 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:33,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:33,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:33,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:33,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:33,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:33,411 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:33,412 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:33,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 23:14:33,425 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:33,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:33,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:33,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:33,475 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:33,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 23:14:33,479 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 [2021-10-28 23:14:33,491 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:33,491 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:33,491 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:33,491 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:33,491 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:33,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:33,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:33,504 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:14:33,509 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:14:33,510 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:14:33,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:33,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:33,512 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:33,514 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:14:33,514 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:14:33,515 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:14:33,515 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#t~ret0) = -2*g_#t~ret0 + 1 Supporting invariants [] [2021-10-28 23:14:33,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 23:14:33,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:33,562 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:14:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:33,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:14:33,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:33,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-28 23:14:33,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:33,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:14:33,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:33,908 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2021-10-28 23:14:33,908 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:14:34,157 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 82 states and 120 transitions. Complement of second has 31 states. [2021-10-28 23:14:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 23:14:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:14:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 36 transitions. [2021-10-28 23:14:34,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 10 letters. Loop has 8 letters. [2021-10-28 23:14:34,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:34,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 18 letters. Loop has 8 letters. [2021-10-28 23:14:34,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:34,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 10 letters. Loop has 16 letters. [2021-10-28 23:14:34,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:34,163 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 120 transitions. [2021-10-28 23:14:34,170 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-10-28 23:14:34,174 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 58 states and 81 transitions. [2021-10-28 23:14:34,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-28 23:14:34,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-28 23:14:34,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 81 transitions. [2021-10-28 23:14:34,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:34,176 INFO L681 BuchiCegarLoop]: Abstraction has 58 states and 81 transitions. [2021-10-28 23:14:34,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 81 transitions. [2021-10-28 23:14:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2021-10-28 23:14:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 15 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (18), 11 states have call predecessors, (18), 13 states have call successors, (18) [2021-10-28 23:14:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-10-28 23:14:34,187 INFO L704 BuchiCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-10-28 23:14:34,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:14:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:14:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:14:34,191 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 23:14:34,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:14:34,259 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-10-28 23:14:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:14:34,260 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 44 transitions. [2021-10-28 23:14:34,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 23:14:34,263 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 30 states and 34 transitions. [2021-10-28 23:14:34,263 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-28 23:14:34,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-28 23:14:34,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 34 transitions. [2021-10-28 23:14:34,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:34,264 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-10-28 23:14:34,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 34 transitions. [2021-10-28 23:14:34,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-10-28 23:14:34,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 7 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:14:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-10-28 23:14:34,269 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-28 23:14:34,269 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-28 23:14:34,269 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:14:34,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 27 transitions. [2021-10-28 23:14:34,270 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 23:14:34,270 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:34,270 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:34,271 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:34,271 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:14:34,271 INFO L791 eck$LassoCheckResult]: Stem: 495#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 496#L20 assume !(main_~x~0 < 0); 503#L21 call main_#t~ret3 := g(main_~x~0);< 509#gENTRY ~x := #in~x; 510#L12 assume !(0 == ~x); 498#L15 call #t~ret0 := g(~x - 1);< 504#gENTRY ~x := #in~x; 511#L12 assume 0 == ~x;#res := 1; 497#gFINAL assume true; 499#gEXIT >#22#return; 501#L15-1 call #t~ret1 := g(1 + #t~ret0);< 513#gENTRY ~x := #in~x; 512#L12 assume !(0 == ~x); 500#L15 call #t~ret0 := g(~x - 1);< 502#gENTRY ~x := #in~x; 519#L12 assume !(0 == ~x); 507#L15 [2021-10-28 23:14:34,271 INFO L793 eck$LassoCheckResult]: Loop: 507#L15 call #t~ret0 := g(~x - 1);< 514#gENTRY ~x := #in~x; 515#L12 assume !(0 == ~x); 507#L15 [2021-10-28 23:14:34,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:34,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2001409165, now seen corresponding path program 2 times [2021-10-28 23:14:34,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:34,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405396509] [2021-10-28 23:14:34,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:34,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:34,283 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:34,299 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:34,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash 49976, now seen corresponding path program 2 times [2021-10-28 23:14:34,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:34,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436601040] [2021-10-28 23:14:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:34,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:34,310 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:34,317 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:34,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:34,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1244451628, now seen corresponding path program 3 times [2021-10-28 23:14:34,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:34,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634787387] [2021-10-28 23:14:34,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:34,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:14:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:14:34,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:14:34,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634787387] [2021-10-28 23:14:34,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634787387] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:14:34,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024619293] [2021-10-28 23:14:34,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:14:34,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:14:34,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:34,464 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:14:34,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-28 23:14:34,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 23:14:34,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:14:34,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:14:34,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:14:34,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024619293] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:14:34,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:14:34,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 23:14:34,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349075349] [2021-10-28 23:14:34,690 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:34,691 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:34,691 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:34,691 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:34,691 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:14:34,691 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:34,691 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:34,691 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:34,692 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration3_Loop [2021-10-28 23:14:34,692 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:34,692 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:34,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:34,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:34,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:34,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:34,745 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:34,745 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:14:34,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:34,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:34,749 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:34,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 23:14:34,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:34,754 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:34,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:34,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:34,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:34,796 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:34,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 23:14:34,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:14:34,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:35,752 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:35,752 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-5, g_~x=-7} Honda state: {g_#in~x=-5, g_~x=-7} Generalized eigenvectors: [{g_#in~x=-4, g_~x=-1}, {g_#in~x=3, g_~x=0}, {g_#in~x=-2, g_~x=0}] Lambdas: [1, 0, 0] Nus: [1, 0] [2021-10-28 23:14:35,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:35,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:35,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:35,783 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:35,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:35,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:35,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 23:14:35,798 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:35,798 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:35,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-28 23:14:35,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:35,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:35,828 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:35,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 23:14:35,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:35,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:35,842 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:35,842 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:35,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-10-28 23:14:35,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:35,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:35,868 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:35,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 23:14:35,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:35,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:35,881 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:35,881 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:35,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-10-28 23:14:35,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:14:35,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:14:35,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:14:35,907 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. cyclomatic complexity: 4 Second operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:14:36,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:14:36,092 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-28 23:14:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:14:36,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 28 transitions. [2021-10-28 23:14:36,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 23:14:36,094 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 28 transitions. [2021-10-28 23:14:36,094 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-28 23:14:36,095 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 23:14:36,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 28 transitions. [2021-10-28 23:14:36,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:36,095 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-28 23:14:36,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 28 transitions. [2021-10-28 23:14:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-10-28 23:14:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:14:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-28 23:14:36,098 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-28 23:14:36,099 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-28 23:14:36,099 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:14:36,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 22 transitions. [2021-10-28 23:14:36,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 23:14:36,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:36,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:36,100 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:36,101 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1] [2021-10-28 23:14:36,101 INFO L791 eck$LassoCheckResult]: Stem: 632#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 633#L20 assume !(main_~x~0 < 0); 640#L21 call main_#t~ret3 := g(main_~x~0);< 644#gENTRY ~x := #in~x; 647#L12 assume !(0 == ~x); 635#L15 call #t~ret0 := g(~x - 1);< 641#gENTRY ~x := #in~x; 648#L12 assume 0 == ~x;#res := 1; 634#gFINAL assume true; 636#gEXIT >#22#return; 638#L15-1 [2021-10-28 23:14:36,101 INFO L793 eck$LassoCheckResult]: Loop: 638#L15-1 call #t~ret1 := g(1 + #t~ret0);< 645#gENTRY ~x := #in~x; 646#L12 assume !(0 == ~x); 637#L15 call #t~ret0 := g(~x - 1);< 639#gENTRY ~x := #in~x; 652#L12 assume !(0 == ~x); 643#L15 call #t~ret0 := g(~x - 1);< 651#gENTRY ~x := #in~x; 649#L12 assume 0 == ~x;#res := 1; 650#gFINAL assume true; 642#gEXIT >#22#return; 638#L15-1 [2021-10-28 23:14:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash -54633169, now seen corresponding path program 2 times [2021-10-28 23:14:36,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:36,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634639635] [2021-10-28 23:14:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:36,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:36,109 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:36,115 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1187216231, now seen corresponding path program 2 times [2021-10-28 23:14:36,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:36,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16401709] [2021-10-28 23:14:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:36,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:36,127 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:36,142 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:36,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:36,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1917105529, now seen corresponding path program 4 times [2021-10-28 23:14:36,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:36,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648847446] [2021-10-28 23:14:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:36,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:36,172 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:36,182 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:36,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:14:36 BoogieIcfgContainer [2021-10-28 23:14:36,605 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:14:36,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:14:36,605 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:14:36,606 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:14:36,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:14:27" (3/4) ... [2021-10-28 23:14:36,609 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:14:36,652 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:14:36,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:14:36,657 INFO L168 Benchmark]: Toolchain (without parser) took 10310.81 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 57.7 MB in the beginning and 54.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:36,658 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:14:36,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.62 ms. Allocated memory is still 100.7 MB. Free memory was 57.4 MB in the beginning and 76.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:36,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.35 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 74.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:14:36,659 INFO L168 Benchmark]: Boogie Preprocessor took 19.34 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 73.9 MB in the end (delta: 729.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:36,660 INFO L168 Benchmark]: RCFGBuilder took 308.57 ms. Allocated memory is still 100.7 MB. Free memory was 73.9 MB in the beginning and 66.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:36,661 INFO L168 Benchmark]: BuchiAutomizer took 9595.09 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.1 MB in the beginning and 56.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:36,661 INFO L168 Benchmark]: Witness Printer took 47.18 ms. Allocated memory is still 121.6 MB. Free memory was 56.5 MB in the beginning and 54.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:36,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.62 ms. Allocated memory is still 100.7 MB. Free memory was 57.4 MB in the beginning and 76.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.35 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 74.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.34 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 73.9 MB in the end (delta: 729.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 308.57 ms. Allocated memory is still 100.7 MB. Free memory was 73.9 MB in the beginning and 66.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9595.09 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.1 MB in the beginning and 56.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. * Witness Printer took 47.18 ms. Allocated memory is still 121.6 MB. Free memory was 56.5 MB in the beginning and 54.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. 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 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 5 locations. One deterministic module has affine ranking function -2 * aux-g(x - 1)-aux + 1 and consists of 10 locations. 2 modules have a trivial ranking function, the largest among these consists of 10 locations. The remainder module has 21 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.5s and 4 iterations. TraceHistogramMax:4. Analysis of lassos took 7.9s. Construction of modules took 0.2s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 46 SDtfs, 60 SDslu, 98 SDs, 0 SdLazy, 228 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq194 hnf92 smp100 dnf139 smp100 tf104 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 226ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.9s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66d93cdc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7d0dc188=1, \result=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@797c6b5b=0, \old(x)=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b1dc3b9=0, x=0, x=1, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) [L21] CALL g(x) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:14:36,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:36,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:37,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec69089-3d32-47f1-a6b8-55757caa1d11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...