./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 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --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 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:18:28,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:18:28,825 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-31 22:18:28,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:18:28,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:18:28,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:18:28,911 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:18:28,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:18:28,912 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:18:28,913 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:18:28,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:18:28,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:18:28,915 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:18:28,916 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:18:28,918 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:18:28,919 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:18:28,919 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:18:28,919 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:18:28,919 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:18:28,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:18:28,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:18:28,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:18:28,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:18:28,925 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:18:28,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:18:28,926 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:18:28,926 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:18:28,926 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:18:28,926 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:18:28,926 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:18:28,927 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:18:28,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:18:28,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:18:28,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:18:28,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:18:28,930 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:18:28,930 INFO L153 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_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a [2024-10-31 22:18:29,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:18:29,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:18:29,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:18:29,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:18:29,269 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:18:29,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c Unable to find full path for "g++" [2024-10-31 22:18:31,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:18:31,657 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:18:31,658 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2024-10-31 22:18:31,666 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/data/c6e4f2ad7/0b0b7cd8140a40acb32c0e228d32cc40/FLAG9fb15ec80 [2024-10-31 22:18:32,045 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/data/c6e4f2ad7/0b0b7cd8140a40acb32c0e228d32cc40 [2024-10-31 22:18:32,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:18:32,051 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:18:32,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:32,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:18:32,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:18:32,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678837ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32, skipping insertion in model container [2024-10-31 22:18:32,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,080 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:18:32,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:32,292 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:18:32,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:32,340 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:18:32,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32 WrapperNode [2024-10-31 22:18:32,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:32,343 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:32,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:18:32,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:18:32,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,357 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,373 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 10 [2024-10-31 22:18:32,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:32,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:18:32,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:18:32,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:18:32,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,397 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-31 22:18:32,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,398 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:18:32,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:18:32,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:18:32,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:18:32,408 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (1/1) ... [2024-10-31 22:18:32,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:32,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:32,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:32,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:18:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure g [2024-10-31 22:18:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2024-10-31 22:18:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:18:32,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:18:32,550 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:18:32,552 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:18:32,737 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-31 22:18:32,737 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:18:32,785 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:18:32,786 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:18:32,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:32 BoogieIcfgContainer [2024-10-31 22:18:32,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:18:32,787 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:18:32,789 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:18:32,810 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:18:32,812 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:18:32,812 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:18:32" (1/3) ... [2024-10-31 22:18:32,815 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@580d7235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:18:32, skipping insertion in model container [2024-10-31 22:18:32,816 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:18:32,816 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:32" (2/3) ... [2024-10-31 22:18:32,817 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@580d7235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:18:32, skipping insertion in model container [2024-10-31 22:18:32,817 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:18:32,817 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:32" (3/3) ... [2024-10-31 22:18:32,820 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_2b.c [2024-10-31 22:18:32,899 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:18:32,899 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:18:32,899 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:18:32,900 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:18:32,900 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:18:32,900 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:18:32,900 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:18:32,900 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:18:32,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2024-10-31 22:18:32,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:18:32,930 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:18:32,930 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:18:32,939 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-31 22:18:32,940 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:18:32,941 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:18:32,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2024-10-31 22:18:32,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:18:32,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:18:32,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:18:32,944 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-31 22:18:32,944 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:18:32,950 INFO L745 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 11#L20true assume !(main_~x~0#1 < 0); 9#L21true call main_#t~ret3#1 := g(main_~x~0#1);< 12#$Ultimate##0true [2024-10-31 22:18:32,950 INFO L747 eck$LassoCheckResult]: Loop: 12#$Ultimate##0true ~x := #in~x; 6#L12true assume !(0 == ~x); 4#L15true call #t~ret0 := g(~x - 1);< 12#$Ultimate##0true [2024-10-31 22:18:32,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1202733, now seen corresponding path program 1 times [2024-10-31 22:18:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:32,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156815876] [2024-10-31 22:18:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:32,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:33,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:33,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:33,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash 29937, now seen corresponding path program 1 times [2024-10-31 22:18:33,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:33,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963634798] [2024-10-31 22:18:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:33,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:33,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:33,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:33,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:33,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1470880581, now seen corresponding path program 1 times [2024-10-31 22:18:33,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:33,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856460990] [2024-10-31 22:18:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:33,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:33,143 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:33,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:33,258 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:18:33,258 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:18:33,259 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:18:33,259 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:18:33,259 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:18:33,259 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,259 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:18:33,260 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:18:33,260 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Loop [2024-10-31 22:18:33,260 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:18:33,260 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:18:33,274 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,284 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,289 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,293 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,297 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,394 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:18:33,395 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:18:33,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:33,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:33,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-31 22:18:33,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:33,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:33,428 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:33,428 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:33,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:33,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:33,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:33,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-31 22:18:33,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:33,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:33,474 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:33,475 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:33,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-31 22:18:33,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:33,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:33,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-31 22:18:33,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:33,503 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:33,528 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:33,528 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:33,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-31 22:18:33,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:33,552 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:33,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-31 22:18:33,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:33,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:33,572 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:33,572 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:33,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:33,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:33,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:33,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-31 22:18:33,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:33,593 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:33,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:33,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:33,623 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:33,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-31 22:18:33,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:18:33,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:33,672 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:33,672 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-8} Honda state: {g_#in~x=-8} Generalized eigenvectors: [{g_#in~x=0}, {g_#in~x=-1}, {g_#in~x=0}] Lambdas: [6, 1, 13] Nus: [0, 1] [2024-10-31 22:18:33,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-31 22:18:33,729 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:18:33,730 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:18:33,730 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:18:33,730 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:18:33,730 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:18:33,730 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,730 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:18:33,730 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:18:33,730 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2024-10-31 22:18:33,730 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:18:33,731 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:18:33,735 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,741 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,749 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,754 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,759 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,764 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,768 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,781 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,786 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:33,875 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:18:33,876 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:18:33,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:33,879 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:33,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-31 22:18:33,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:33,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:33,903 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:33,903 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:33,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-31 22:18:33,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:33,925 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:33,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-31 22:18:33,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:33,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:33,940 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:33,940 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:33,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:33,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:33,955 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:33,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-31 22:18:33,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:33,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:33,970 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:33,970 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:33,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:33,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:33,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:33,983 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:33,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-31 22:18:33,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:33,987 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:34,000 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:34,000 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3#1=0} Honda state: {ULTIMATE.start_main_#t~ret3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:34,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:34,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,013 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-31 22:18:34,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:34,015 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:34,029 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:34,029 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:34,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:34,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,043 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-31 22:18:34,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:34,046 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:34,060 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:34,061 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:34,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:34,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,076 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-31 22:18:34,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:34,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:34,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:34,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,115 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-31 22:18:34,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:18:34,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:34,177 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:18:34,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-31 22:18:34,182 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:18:34,182 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:18:34,182 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:18:34,182 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:18:34,182 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:18:34,183 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,183 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:18:34,183 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:18:34,183 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2024-10-31 22:18:34,183 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:18:34,183 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:18:34,185 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:34,190 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:34,195 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:34,201 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:34,205 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:34,210 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:34,214 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:34,219 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:34,233 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:34,313 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:18:34,319 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:18:34,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,323 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-31 22:18:34,327 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 [2024-10-31 22:18:34,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:34,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:34,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:34,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:34,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:34,345 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:34,346 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:34,349 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:18:34,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-31 22:18:34,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,370 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-31 22:18:34,372 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 [2024-10-31 22:18:34,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:34,386 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:34,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:34,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:34,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:34,387 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:34,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:34,390 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:18:34,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:34,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,411 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-31 22:18:34,413 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:18:34,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:34,428 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:34,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:34,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:34,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:34,429 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:34,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:34,432 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:18:34,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:34,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,446 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-31 22:18:34,448 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 [2024-10-31 22:18:34,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:34,459 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:34,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:34,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:34,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:34,460 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:34,460 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:34,464 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:18:34,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-31 22:18:34,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,484 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-31 22:18:34,487 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 [2024-10-31 22:18:34,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:34,501 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:34,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:34,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:34,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:34,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:34,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:34,504 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:18:34,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:34,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,518 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-31 22:18:34,521 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 [2024-10-31 22:18:34,532 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:34,532 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:34,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:34,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:34,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:34,533 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:34,533 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:34,535 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:18:34,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:34,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,554 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-31 22:18:34,556 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 [2024-10-31 22:18:34,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:34,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:34,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:34,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:34,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:34,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:34,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:34,572 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:18:34,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:34,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,593 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-31 22:18:34,607 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 [2024-10-31 22:18:34,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:34,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:34,621 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-10-31 22:18:34,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:34,659 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2024-10-31 22:18:34,660 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2024-10-31 22:18:34,690 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:18:34,720 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2024-10-31 22:18:34,720 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. [2024-10-31 22:18:34,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:34,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:34,733 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:34,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-31 22:18:34,735 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:18:34,756 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2024-10-31 22:18:34,756 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:18:34,756 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [1*g_#in~x >= 0] [2024-10-31 22:18:34,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-10-31 22:18:34,778 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2024-10-31 22:18:34,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:34,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:18:34,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:34,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:18:34,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:35,012 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-31 22:18:35,014 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-10-31 22:18:35,188 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 36 states and 43 transitions. Complement of second has 17 states. [2024-10-31 22:18:35,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 22:18:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:18:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 12 transitions. [2024-10-31 22:18:35,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2024-10-31 22:18:35,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:18:35,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2024-10-31 22:18:35,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:18:35,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2024-10-31 22:18:35,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:18:35,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 43 transitions. [2024-10-31 22:18:35,206 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:18:35,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 20 states and 26 transitions. [2024-10-31 22:18:35,213 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2024-10-31 22:18:35,213 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2024-10-31 22:18:35,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2024-10-31 22:18:35,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:18:35,215 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-31 22:18:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2024-10-31 22:18:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-10-31 22:18:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2024-10-31 22:18:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-31 22:18:35,245 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-31 22:18:35,245 INFO L425 stractBuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-31 22:18:35,245 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 22:18:35,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2024-10-31 22:18:35,246 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:18:35,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:18:35,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:18:35,247 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:35,248 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:35,248 INFO L745 eck$LassoCheckResult]: Stem: 132#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 133#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 134#L20 assume !(main_~x~0#1 < 0); 129#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 131#$Ultimate##0 ~x := #in~x; 135#L12 assume !(0 == ~x); 124#L15 call #t~ret0 := g(~x - 1);< 130#$Ultimate##0 ~x := #in~x; 136#L12 assume 0 == ~x;#res := 1; 123#gFINAL assume true; 125#gEXIT >#23#return; 127#L15-1 [2024-10-31 22:18:35,248 INFO L747 eck$LassoCheckResult]: Loop: 127#L15-1 call #t~ret1 := g(1 + #t~ret0);< 128#$Ultimate##0 ~x := #in~x; 139#L12 assume !(0 == ~x); 126#L15 call #t~ret0 := g(~x - 1);< 128#$Ultimate##0 ~x := #in~x; 139#L12 assume 0 == ~x;#res := 1; 138#gFINAL assume true; 140#gEXIT >#23#return; 127#L15-1 [2024-10-31 22:18:35,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:35,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 1 times [2024-10-31 22:18:35,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:35,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272855693] [2024-10-31 22:18:35,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:35,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:35,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:35,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:35,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:35,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1500125133, now seen corresponding path program 1 times [2024-10-31 22:18:35,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:35,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574536215] [2024-10-31 22:18:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:35,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:35,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:35,291 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:35,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:35,292 INFO L85 PathProgramCache]: Analyzing trace with hash 122773219, now seen corresponding path program 1 times [2024-10-31 22:18:35,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:35,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212582876] [2024-10-31 22:18:35,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:35,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:35,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:18:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:35,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:18:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:18:35,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:35,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212582876] [2024-10-31 22:18:35,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212582876] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:35,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365728415] [2024-10-31 22:18:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:35,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:35,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:35,614 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:35,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-31 22:18:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:35,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:18:35,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:18:35,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:18:35,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365728415] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:35,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:35,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-10-31 22:18:35,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236111440] [2024-10-31 22:18:35,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:36,024 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:18:36,024 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:18:36,024 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:18:36,024 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:18:36,024 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:18:36,025 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,025 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:18:36,025 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:18:36,025 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2024-10-31 22:18:36,025 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:18:36,025 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:18:36,026 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:36,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:36,033 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:36,037 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:36,044 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:36,092 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:18:36,092 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:18:36,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,095 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-31 22:18:36,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:36,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:36,117 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:36,117 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=1} Honda state: {g_#in~x=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:36,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:36,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,138 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-31 22:18:36,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:36,143 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:36,161 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:36,161 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:36,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:36,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,182 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-31 22:18:36,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:36,184 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:36,202 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:36,202 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=1} Honda state: {g_~x=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:36,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:36,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,223 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-31 22:18:36,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:36,225 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:36,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-10-31 22:18:36,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,268 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-31 22:18:36,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:18:36,271 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:36,290 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:18:36,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-10-31 22:18:36,310 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:18:36,310 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:18:36,310 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:18:36,310 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:18:36,310 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:18:36,310 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,310 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:18:36,311 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:18:36,311 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2024-10-31 22:18:36,311 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:18:36,311 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:18:36,312 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:36,316 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:36,319 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:36,323 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:36,330 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:36,386 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:18:36,386 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:18:36,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,388 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-10-31 22:18:36,390 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:18:36,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:36,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:36,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:36,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:36,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:36,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:36,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:36,429 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:18:36,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-10-31 22:18:36,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:36,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,456 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-10-31 22:18:36,462 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 [2024-10-31 22:18:36,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:36,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:36,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:36,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:36,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:36,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:36,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:36,483 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:18:36,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:36,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,497 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-10-31 22:18:36,499 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 [2024-10-31 22:18:36,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:36,510 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:36,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:36,511 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:36,511 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:36,512 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:36,512 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:36,515 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:18:36,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:36,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,536 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-10-31 22:18:36,539 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 [2024-10-31 22:18:36,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:36,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:36,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:36,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:36,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:36,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:36,554 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:36,555 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:18:36,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:36,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,568 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-10-31 22:18:36,570 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 [2024-10-31 22:18:36,581 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:18:36,581 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:18:36,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:18:36,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:18:36,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:18:36,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:18:36,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:18:36,586 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:18:36,592 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:18:36,592 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:18:36,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:36,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,596 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-10-31 22:18:36,598 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:18:36,598 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:18:36,598 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:18:36,598 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#t~ret0) = -2*g_#t~ret0 + 1 Supporting invariants [] [2024-10-31 22:18:36,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2024-10-31 22:18:36,618 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:18:36,623 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret0 [2024-10-31 22:18:36,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:18:36,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:18:36,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:36,928 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-10-31 22:18:36,929 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6 Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-10-31 22:18:37,260 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 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 83 states and 121 transitions. Complement of second has 31 states. [2024-10-31 22:18:37,261 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 [2024-10-31 22:18:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-10-31 22:18:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 37 transitions. [2024-10-31 22:18:37,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 8 letters. [2024-10-31 22:18:37,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:18:37,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 19 letters. Loop has 8 letters. [2024-10-31 22:18:37,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:18:37,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 16 letters. [2024-10-31 22:18:37,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:18:37,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 121 transitions. [2024-10-31 22:18:37,274 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-10-31 22:18:37,280 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 59 states and 82 transitions. [2024-10-31 22:18:37,282 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2024-10-31 22:18:37,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2024-10-31 22:18:37,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 82 transitions. [2024-10-31 22:18:37,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:18:37,283 INFO L218 hiAutomatonCegarLoop]: Abstraction has 59 states and 82 transitions. [2024-10-31 22:18:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 82 transitions. [2024-10-31 22:18:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-10-31 22:18:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 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) [2024-10-31 22:18:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2024-10-31 22:18:37,300 INFO L240 hiAutomatonCegarLoop]: Abstraction has 53 states and 72 transitions. [2024-10-31 22:18:37,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:37,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:18:37,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:18:37,306 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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) [2024-10-31 22:18:37,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:37,425 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-10-31 22:18:37,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 45 transitions. [2024-10-31 22:18:37,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-31 22:18:37,428 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 31 states and 35 transitions. [2024-10-31 22:18:37,428 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2024-10-31 22:18:37,429 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2024-10-31 22:18:37,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 35 transitions. [2024-10-31 22:18:37,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:18:37,429 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-10-31 22:18:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 35 transitions. [2024-10-31 22:18:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2024-10-31 22:18:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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) [2024-10-31 22:18:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-10-31 22:18:37,432 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-10-31 22:18:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:18:37,433 INFO L425 stractBuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-10-31 22:18:37,434 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 22:18:37,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 28 transitions. [2024-10-31 22:18:37,434 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-31 22:18:37,434 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:18:37,435 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:18:37,435 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:37,435 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:18:37,435 INFO L745 eck$LassoCheckResult]: Stem: 581#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 582#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 583#L20 assume !(main_~x~0#1 < 0); 577#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 580#$Ultimate##0 ~x := #in~x; 586#L12 assume !(0 == ~x); 576#L15 call #t~ret0 := g(~x - 1);< 578#$Ultimate##0 ~x := #in~x; 585#L12 assume 0 == ~x;#res := 1; 594#gFINAL assume true; 579#gEXIT >#23#return; 574#L15-1 call #t~ret1 := g(1 + #t~ret0);< 587#$Ultimate##0 ~x := #in~x; 592#L12 assume !(0 == ~x); 573#L15 call #t~ret0 := g(~x - 1);< 575#$Ultimate##0 ~x := #in~x; 584#L12 assume !(0 == ~x); 570#L15 [2024-10-31 22:18:37,435 INFO L747 eck$LassoCheckResult]: Loop: 570#L15 call #t~ret0 := g(~x - 1);< 589#$Ultimate##0 ~x := #in~x; 588#L12 assume !(0 == ~x); 570#L15 [2024-10-31 22:18:37,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:37,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1443446059, now seen corresponding path program 2 times [2024-10-31 22:18:37,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:37,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33790782] [2024-10-31 22:18:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:37,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:37,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:37,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:37,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash 50937, now seen corresponding path program 2 times [2024-10-31 22:18:37,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:37,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092465238] [2024-10-31 22:18:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:37,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:37,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:37,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:37,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:37,475 INFO L85 PathProgramCache]: Analyzing trace with hash -488954971, now seen corresponding path program 3 times [2024-10-31 22:18:37,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:37,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276830476] [2024-10-31 22:18:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:37,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:18:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:18:37,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:37,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276830476] [2024-10-31 22:18:37,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276830476] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:37,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845143513] [2024-10-31 22:18:37,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:18:37,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:37,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:37,668 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:37,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-31 22:18:37,710 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-31 22:18:37,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:37,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-31 22:18:37,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:18:37,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:18:37,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845143513] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:37,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:37,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-10-31 22:18:37,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615049594] [2024-10-31 22:18:37,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:37,841 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:18:37,841 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:18:37,841 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:18:37,841 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:18:37,841 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:18:37,842 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:37,842 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:18:37,842 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:18:37,842 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration3_Loop [2024-10-31 22:18:37,842 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:18:37,842 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:18:37,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:37,852 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:37,855 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:37,857 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:18:37,908 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:18:37,908 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:18:37,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:37,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:37,914 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:37,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-10-31 22:18:37,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:37,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:37,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:37,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:37,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:37,967 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:37,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-10-31 22:18:37,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:18:37,969 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:38,260 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:38,260 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=4, g_~x=-2} Honda state: {g_#in~x=4, g_~x=-2} Generalized eigenvectors: [{g_#in~x=-8, g_~x=0}, {g_#in~x=2, g_~x=0}, {g_#in~x=-1, g_~x=-1}] Lambdas: [0, 0, 1] Nus: [0, 0] [2024-10-31 22:18:38,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2024-10-31 22:18:38,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:38,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:38,275 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:38,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-10-31 22:18:38,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:38,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:38,290 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:38,290 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:38,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2024-10-31 22:18:38,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:38,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:38,305 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:38,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-10-31 22:18:38,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:38,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:38,320 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:38,320 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:38,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:38,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:18:38,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:38,336 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:38,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-10-31 22:18:38,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:18:38,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:18:38,356 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:18:38,357 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:18:38,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:38,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:38,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:18:38,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:18:38,375 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. cyclomatic complexity: 4 Second operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 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) [2024-10-31 22:18:38,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:38,500 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-10-31 22:18:38,501 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 29 transitions. [2024-10-31 22:18:38,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-31 22:18:38,502 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 29 transitions. [2024-10-31 22:18:38,502 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2024-10-31 22:18:38,502 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2024-10-31 22:18:38,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 29 transitions. [2024-10-31 22:18:38,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:18:38,503 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-10-31 22:18:38,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 29 transitions. [2024-10-31 22:18:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-10-31 22:18:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2024-10-31 22:18:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-10-31 22:18:38,507 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-10-31 22:18:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:18:38,511 INFO L425 stractBuchiCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-10-31 22:18:38,511 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 22:18:38,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 23 transitions. [2024-10-31 22:18:38,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-31 22:18:38,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:18:38,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:18:38,536 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:38,537 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1] [2024-10-31 22:18:38,537 INFO L745 eck$LassoCheckResult]: Stem: 777#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 778#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 779#L20 assume !(main_~x~0#1 < 0); 773#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 776#$Ultimate##0 ~x := #in~x; 782#L12 assume !(0 == ~x); 772#L15 call #t~ret0 := g(~x - 1);< 774#$Ultimate##0 ~x := #in~x; 781#L12 assume 0 == ~x;#res := 1; 786#gFINAL assume true; 775#gEXIT >#23#return; 770#L15-1 [2024-10-31 22:18:38,537 INFO L747 eck$LassoCheckResult]: Loop: 770#L15-1 call #t~ret1 := g(1 + #t~ret0);< 784#$Ultimate##0 ~x := #in~x; 783#L12 assume !(0 == ~x); 769#L15 call #t~ret0 := g(~x - 1);< 771#$Ultimate##0 ~x := #in~x; 780#L12 assume !(0 == ~x); 767#L15 call #t~ret0 := g(~x - 1);< 785#$Ultimate##0 ~x := #in~x; 787#L12 assume 0 == ~x;#res := 1; 766#gFINAL assume true; 768#gEXIT >#23#return; 770#L15-1 [2024-10-31 22:18:38,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 2 times [2024-10-31 22:18:38,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:38,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684597452] [2024-10-31 22:18:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:38,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:38,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:38,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:38,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1133998729, now seen corresponding path program 2 times [2024-10-31 22:18:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:38,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448123369] [2024-10-31 22:18:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:38,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:38,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2024-10-31 22:18:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:38,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:38,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1734292557, now seen corresponding path program 4 times [2024-10-31 22:18:38,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307308391] [2024-10-31 22:18:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:38,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:38,593 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:38,602 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:38,959 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:39,002 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-31 22:18:39,018 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-31 22:18:39,024 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-31 22:18:39,030 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-31 22:18:39,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 31.10 10:18:39 BoogieIcfgContainer [2024-10-31 22:18:39,031 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-31 22:18:39,032 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:18:39,033 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:18:39,033 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:18:39,034 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:32" (3/4) ... [2024-10-31 22:18:39,038 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-10-31 22:18:39,040 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-31 22:18:39,041 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-31 22:18:39,088 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 22:18:39,089 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:18:39,089 INFO L158 Benchmark]: Toolchain (without parser) took 7038.33ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 104.9MB in the beginning and 113.8MB in the end (delta: -8.9MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2024-10-31 22:18:39,090 INFO L158 Benchmark]: CDTParser took 4.22ms. Allocated memory is still 102.8MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:18:39,090 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.17ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 114.6MB in the end (delta: -10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-31 22:18:39,090 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.29ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 113.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:18:39,090 INFO L158 Benchmark]: Boogie Preprocessor took 29.86ms. Allocated memory is still 142.6MB. Free memory was 113.1MB in the beginning and 111.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:18:39,091 INFO L158 Benchmark]: RCFGBuilder took 380.14ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 101.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-31 22:18:39,091 INFO L158 Benchmark]: BuchiAutomizer took 6244.32ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 101.0MB in the beginning and 115.9MB in the end (delta: -14.9MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2024-10-31 22:18:39,091 INFO L158 Benchmark]: Witness Printer took 56.80ms. Allocated memory is still 172.0MB. Free memory was 115.9MB in the beginning and 113.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:18:39,093 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.22ms. Allocated memory is still 102.8MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.17ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 114.6MB in the end (delta: -10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.29ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 113.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.86ms. Allocated memory is still 142.6MB. Free memory was 113.1MB in the beginning and 111.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 380.14ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 101.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 6244.32ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 101.0MB in the beginning and 115.9MB in the end (delta: -14.9MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Witness Printer took 56.80ms. Allocated memory is still 172.0MB. Free memory was 115.9MB in the beginning and 113.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. * 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 6 locations. One deterministic module has affine ranking function null and consists of 10 locations. 2 modules have a trivial ranking function, the largest among these consists of 11 locations. The remainder module has 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.0s and 4 iterations. TraceHistogramMax:4. Analysis of lassos took 4.5s. Construction of modules took 0.2s. Büchi inclusion checks took 1.0s. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 181 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 261 IncrementalHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 52 mSDtfsCounter, 261 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq190 hnf92 smp100 dnf133 smp100 tf106 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 164ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1] [L15] RET g(x - 1) VAL [\old(x)=1, 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. - 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) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1] [L15] RET g(x - 1) VAL [\old(x)=1, 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! [2024-10-31 22:18:39,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:39,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-31 22:18:39,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06816f-b6bf-49e8-96a8-ba2783b1bf30/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)