./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.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_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/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_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/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_72e58e11-74c0-477c-81dd-e0cd3aff3e93/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 f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:11:25,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:11:25,686 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-31 22:11:25,702 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:11:25,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:11:25,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:11:25,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:11:25,769 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:11:25,772 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:11:25,777 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:11:25,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:11:25,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:11:25,779 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:11:25,779 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:11:25,786 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:11:25,787 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:11:25,787 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:11:25,788 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:11:25,788 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:11:25,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:11:25,792 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:11:25,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:11:25,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:11:25,794 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:11:25,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:11:25,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:11:25,795 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:11:25,796 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:11:25,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:11:25,799 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:11:25,800 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:11:25,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:11:25,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:11:25,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:11:25,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:11:25,802 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:11:25,802 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_72e58e11-74c0-477c-81dd-e0cd3aff3e93/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 [2024-10-31 22:11:26,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:11:26,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:11:26,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:11:26,167 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:11:26,168 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:11:26,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c Unable to find full path for "g++" [2024-10-31 22:11:28,257 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:11:28,459 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:11:28,460 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2024-10-31 22:11:28,467 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/data/464c454c7/d53ac64a3aea4e13b8a0530351769e30/FLAG8b4a06f9d [2024-10-31 22:11:28,480 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/data/464c454c7/d53ac64a3aea4e13b8a0530351769e30 [2024-10-31 22:11:28,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:11:28,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:11:28,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:28,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:11:28,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:11:28,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61064c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28, skipping insertion in model container [2024-10-31 22:11:28,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,515 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:11:28,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:28,765 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:11:28,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:28,802 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:11:28,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28 WrapperNode [2024-10-31 22:11:28,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:28,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:28,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:11:28,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:11:28,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,836 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 7 [2024-10-31 22:11:28,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:28,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:11:28,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:11:28,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:11:28,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,859 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-31 22:11:28,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:11:28,874 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:11:28,874 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:11:28,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:11:28,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (1/1) ... [2024-10-31 22:11:28,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:28,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:28,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:28,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:11:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2024-10-31 22:11:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2024-10-31 22:11:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2024-10-31 22:11:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2024-10-31 22:11:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:11:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:11:29,049 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:11:29,056 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:11:29,278 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-31 22:11:29,279 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:11:29,296 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:11:29,299 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:11:29,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:29 BoogieIcfgContainer [2024-10-31 22:11:29,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:11:29,301 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:11:29,302 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:11:29,306 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:11:29,307 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:11:29,307 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:11:28" (1/3) ... [2024-10-31 22:11:29,309 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49230d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:11:29, skipping insertion in model container [2024-10-31 22:11:29,311 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:11:29,311 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:28" (2/3) ... [2024-10-31 22:11:29,312 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49230d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:11:29, skipping insertion in model container [2024-10-31 22:11:29,312 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:11:29,312 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:29" (3/3) ... [2024-10-31 22:11:29,314 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_1c.c [2024-10-31 22:11:29,400 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:11:29,401 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:11:29,401 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:11:29,401 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:11:29,402 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:11:29,402 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:11:29,402 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:11:29,402 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:11:29,409 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:11:29,436 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-10-31 22:11:29,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:11:29,437 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:11:29,446 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-31 22:11:29,446 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:11:29,446 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:11:29,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:11:29,451 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-10-31 22:11:29,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:11:29,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:11:29,453 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-31 22:11:29,453 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:11:29,459 INFO L745 eck$LassoCheckResult]: Stem: 21#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 10#L25true call main_#t~ret6#1 := rec2(main_~x~0#1);< 7#$Ultimate##0true [2024-10-31 22:11:29,460 INFO L747 eck$LassoCheckResult]: Loop: 7#$Ultimate##0true ~j := #in~j; 17#L18true assume !(~j <= 0); 20#L20true call #t~ret3 := rec2(~j - 1);< 7#$Ultimate##0true [2024-10-31 22:11:29,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:29,467 INFO L85 PathProgramCache]: Analyzing trace with hash 48738, now seen corresponding path program 1 times [2024-10-31 22:11:29,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:29,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865200219] [2024-10-31 22:11:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:29,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:29,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:29,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:29,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash 39868, now seen corresponding path program 1 times [2024-10-31 22:11:29,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:29,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961958315] [2024-10-31 22:11:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:29,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:29,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:29,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:29,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1451963835, now seen corresponding path program 1 times [2024-10-31 22:11:29,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:29,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525549799] [2024-10-31 22:11:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:29,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:29,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:29,737 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:11:29,738 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:11:29,738 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:11:29,739 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:11:29,739 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:11:29,739 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:29,739 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:11:29,739 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:11:29,739 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration1_Loop [2024-10-31 22:11:29,740 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:11:29,740 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:11:29,754 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:29,763 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:29,770 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:29,782 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:29,787 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:29,865 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:11:29,866 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:11:29,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:29,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:29,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:29,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-31 22:11:29,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:11:29,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:29,923 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:11:29,923 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_~j=0} Honda state: {rec2_~j=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:11:29,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-31 22:11:29,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:29,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:29,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:29,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-31 22:11:29,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:11:29,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:29,972 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:11:29,973 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#res=0} Honda state: {rec2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:11:29,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-31 22:11:29,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:29,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:29,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:29,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-31 22:11:29,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:11:29,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:30,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:30,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:30,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:30,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:30,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-31 22:11:30,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:11:30,050 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:30,126 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:11:30,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:30,130 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:11:30,130 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:11:30,130 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:11:30,130 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:11:30,130 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:11:30,130 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:30,130 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:11:30,130 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:11:30,130 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration1_Loop [2024-10-31 22:11:30,131 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:11:30,131 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:11:30,132 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:30,136 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:30,139 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:30,151 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:30,158 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:30,200 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:11:30,205 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:11:30,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:30,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:30,209 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:30,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-31 22:11:30,212 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 22:11:30,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:11:30,230 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:11:30,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:11:30,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:11:30,231 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:11:30,235 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:11:30,235 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:11:30,240 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:11:30,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-31 22:11:30,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:30,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:30,265 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:30,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-31 22:11:30,269 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 22:11:30,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:11:30,284 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:11:30,284 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:11:30,284 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:11:30,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:11:30,286 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:11:30,286 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:11:30,294 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:11:30,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-31 22:11:30,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:30,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:30,315 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:30,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-31 22:11:30,321 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 22:11:30,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:11:30,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:11:30,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:11:30,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:11:30,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:11:30,338 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:11:30,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:11:30,344 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:11:30,351 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:11:30,351 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-31 22:11:30,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:30,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:30,355 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:30,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-31 22:11:30,362 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:11:30,362 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:11:30,363 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:11:30,363 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#in~j) = 1*rec2_#in~j Supporting invariants [] [2024-10-31 22:11:30,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:30,385 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:11:30,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:30,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:11:30,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:30,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:11:30,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:30,603 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 22:11:30,653 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-10-31 22:11:30,658 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:30,788 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6). Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 37 states and 45 transitions. Complement of second has 16 states. [2024-10-31 22:11:30,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 22:11:30,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2024-10-31 22:11:30,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2024-10-31 22:11:30,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:11:30,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2024-10-31 22:11:30,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:11:30,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2024-10-31 22:11:30,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:11:30,807 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 45 transitions. [2024-10-31 22:11:30,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 22:11:30,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 24 states and 31 transitions. [2024-10-31 22:11:30,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2024-10-31 22:11:30,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2024-10-31 22:11:30,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2024-10-31 22:11:30,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:11:30,830 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 31 transitions. [2024-10-31 22:11:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2024-10-31 22:11:30,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2024-10-31 22:11:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-31 22:11:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-10-31 22:11:30,865 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-10-31 22:11:30,865 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-10-31 22:11:30,865 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 22:11:30,865 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2024-10-31 22:11:30,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 22:11:30,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:11:30,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:11:30,869 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:30,869 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:11:30,870 INFO L745 eck$LassoCheckResult]: Stem: 135#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 133#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 118#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 126#$Ultimate##0 ~j := #in~j; 127#L18 assume !(~j <= 0); 117#L20 call #t~ret3 := rec2(~j - 1);< 128#$Ultimate##0 ~j := #in~j; 129#L18 assume ~j <= 0;#res := 0; 124#rec2FINAL assume true; 125#rec2EXIT >#34#return; 116#L20-1 call #t~ret4 := rec1(#t~ret3);< 119#$Ultimate##0 [2024-10-31 22:11:30,870 INFO L747 eck$LassoCheckResult]: Loop: 119#$Ultimate##0 ~i := #in~i; 123#L12 assume !(~i <= 0); 122#L14 call #t~ret0 := rec1(~i - 2);< 119#$Ultimate##0 [2024-10-31 22:11:30,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:30,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1193590059, now seen corresponding path program 1 times [2024-10-31 22:11:30,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:30,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938435865] [2024-10-31 22:11:30,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:30,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:30,887 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:30,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:30,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:30,901 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 1 times [2024-10-31 22:11:30,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:30,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374966539] [2024-10-31 22:11:30,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:30,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:30,914 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:30,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:30,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:30,926 INFO L85 PathProgramCache]: Analyzing trace with hash -207203934, now seen corresponding path program 1 times [2024-10-31 22:11:30,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:30,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372130234] [2024-10-31 22:11:30,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:30,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:31,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-31 22:11:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:11:31,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:31,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372130234] [2024-10-31 22:11:31,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372130234] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:31,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:31,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:11:31,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460583637] [2024-10-31 22:11:31,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:31,217 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:11:31,217 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:11:31,217 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:11:31,217 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:11:31,217 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:11:31,217 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:31,218 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:11:31,218 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:11:31,218 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration2_Loop [2024-10-31 22:11:31,218 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:11:31,218 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:11:31,219 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,225 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,233 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,237 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,241 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,245 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,285 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:11:31,286 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:11:31,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:31,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:31,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:31,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-31 22:11:31,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:11:31,293 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:31,308 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:11:31,309 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:11:31,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-10-31 22:11:31,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:31,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:31,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:31,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-31 22:11:31,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:11:31,332 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:31,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-31 22:11:31,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:31,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:31,371 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:31,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-31 22:11:31,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:11:31,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:31,451 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:11:31,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-31 22:11:31,457 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:11:31,457 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:11:31,457 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:11:31,457 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:11:31,458 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:11:31,458 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:31,458 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:11:31,458 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:11:31,458 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration2_Loop [2024-10-31 22:11:31,458 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:11:31,458 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:11:31,461 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,470 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,473 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,477 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,481 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,485 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:31,533 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:11:31,534 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:11:31,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:31,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:31,536 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:31,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-31 22:11:31,539 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 22:11:31,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:11:31,554 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:11:31,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:11:31,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:11:31,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:11:31,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:11:31,557 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:11:31,561 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:11:31,564 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-31 22:11:31,565 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:11:31,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:31,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:31,568 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:31,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-31 22:11:31,571 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:11:31,571 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:11:31,571 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:11:31,572 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-10-31 22:11:31,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-31 22:11:31,589 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:11:31,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:31,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:11:31,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:31,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:11:31,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:31,819 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 22:11:31,820 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 22:11:31,821 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 25 transitions. cyclomatic complexity: 7 Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:11:31,937 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 25 transitions. cyclomatic complexity: 7. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 44 states and 59 transitions. Complement of second has 18 states. [2024-10-31 22:11:31,938 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 22:11:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:11:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 15 transitions. [2024-10-31 22:11:31,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 15 transitions. Stem has 11 letters. Loop has 3 letters. [2024-10-31 22:11:31,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:11:31,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 15 transitions. Stem has 14 letters. Loop has 3 letters. [2024-10-31 22:11:31,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:11:31,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 15 transitions. Stem has 11 letters. Loop has 6 letters. [2024-10-31 22:11:31,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:11:31,941 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 59 transitions. [2024-10-31 22:11:31,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 22:11:31,950 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 38 states and 51 transitions. [2024-10-31 22:11:31,950 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2024-10-31 22:11:31,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2024-10-31 22:11:31,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 51 transitions. [2024-10-31 22:11:31,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:11:31,953 INFO L218 hiAutomatonCegarLoop]: Abstraction has 38 states and 51 transitions. [2024-10-31 22:11:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 51 transitions. [2024-10-31 22:11:31,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-10-31 22:11:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-31 22:11:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-10-31 22:11:31,963 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-10-31 22:11:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:31,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:31,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:31,970 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:11:32,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:11:32,033 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2024-10-31 22:11:32,033 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2024-10-31 22:11:32,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 22:11:32,040 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 30 states and 36 transitions. [2024-10-31 22:11:32,040 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2024-10-31 22:11:32,041 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2024-10-31 22:11:32,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2024-10-31 22:11:32,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:11:32,041 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-10-31 22:11:32,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2024-10-31 22:11:32,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-10-31 22:11:32,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2024-10-31 22:11:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-10-31 22:11:32,049 INFO L240 hiAutomatonCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-10-31 22:11:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:11:32,053 INFO L425 stractBuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-10-31 22:11:32,054 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 22:11:32,054 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2024-10-31 22:11:32,055 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 22:11:32,055 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:11:32,055 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:11:32,056 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:32,056 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:11:32,056 INFO L745 eck$LassoCheckResult]: Stem: 367#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 363#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 347#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 350#$Ultimate##0 ~j := #in~j; 351#L18 assume !(~j <= 0); 342#L20 call #t~ret3 := rec2(~j - 1);< 352#$Ultimate##0 ~j := #in~j; 353#L18 assume !(~j <= 0); 343#L20 call #t~ret3 := rec2(~j - 1);< 352#$Ultimate##0 ~j := #in~j; 354#L18 assume ~j <= 0;#res := 0; 366#rec2FINAL assume true; 349#rec2EXIT >#34#return; 341#L20-1 call #t~ret4 := rec1(#t~ret3);< 344#$Ultimate##0 ~i := #in~i; 345#L12 assume ~i <= 0;#res := 0; 364#rec1FINAL assume true; 365#rec1EXIT >#36#return; 355#L20-2 #res := #t~ret4 - 1;havoc #t~ret3;havoc #t~ret4; 346#rec2FINAL assume true; 348#rec2EXIT >#34#return; 358#L20-1 call #t~ret4 := rec1(#t~ret3);< 362#$Ultimate##0 [2024-10-31 22:11:32,056 INFO L747 eck$LassoCheckResult]: Loop: 362#$Ultimate##0 ~i := #in~i; 369#L12 assume !(~i <= 0); 360#L14 call #t~ret0 := rec1(~i - 2);< 362#$Ultimate##0 [2024-10-31 22:11:32,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1665524430, now seen corresponding path program 1 times [2024-10-31 22:11:32,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:32,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499508272] [2024-10-31 22:11:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:32,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:32,075 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:32,092 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:32,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:32,093 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 2 times [2024-10-31 22:11:32,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:32,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766540351] [2024-10-31 22:11:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:32,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:32,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:32,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:32,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:32,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2118876407, now seen corresponding path program 1 times [2024-10-31 22:11:32,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:32,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340327161] [2024-10-31 22:11:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:32,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:32,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:32,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-31 22:11:32,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-31 22:11:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:32,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:11:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:32,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 22:11:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-31 22:11:32,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:32,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340327161] [2024-10-31 22:11:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340327161] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:32,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:32,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:11:32,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649813507] [2024-10-31 22:11:32,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:32,449 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:11:32,449 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:11:32,449 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:11:32,449 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:11:32,450 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:11:32,450 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,450 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:11:32,450 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:11:32,450 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration3_Loop [2024-10-31 22:11:32,450 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:11:32,450 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:11:32,451 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,456 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,459 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,462 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,465 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,468 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,527 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:11:32,527 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:11:32,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:32,532 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:32,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:11:32,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:32,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-31 22:11:32,557 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:11:32,557 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:11:32,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-31 22:11:32,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:32,579 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:32,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-31 22:11:32,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:11:32,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:32,601 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:11:32,601 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:11:32,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-31 22:11:32,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:32,621 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:32,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-31 22:11:32,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:11:32,625 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:32,643 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:11:32,643 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:11:32,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-10-31 22:11:32,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:32,664 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:32,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-31 22:11:32,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:11:32,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:32,682 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:11:32,683 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:11:32,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-31 22:11:32,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:32,705 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:32,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-31 22:11:32,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:11:32,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:32,725 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:11:32,725 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:11:32,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-31 22:11:32,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:32,747 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:32,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-31 22:11:32,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:11:32,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:32,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:32,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:32,779 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:32,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-31 22:11:32,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:11:32,782 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:11:32,837 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:11:32,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:32,841 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:11:32,841 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:11:32,841 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:11:32,841 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:11:32,841 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:11:32,841 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,841 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:11:32,841 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:11:32,841 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration3_Loop [2024-10-31 22:11:32,842 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:11:32,842 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:11:32,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,849 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,854 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,857 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,860 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,867 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:11:32,902 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:11:32,902 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:11:32,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:32,905 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:32,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-31 22:11:32,908 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 22:11:32,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:11:32,922 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:11:32,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:11:32,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:11:32,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:11:32,924 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:11:32,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:11:32,928 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:11:32,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-10-31 22:11:32,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:32,951 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:32,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-31 22:11:32,954 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 22:11:32,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:11:32,968 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:11:32,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:11:32,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:11:32,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:11:32,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:11:32,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:11:32,971 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:11:32,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:32,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:32,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:32,993 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:32,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-31 22:11:32,996 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 22:11:33,007 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:11:33,007 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:11:33,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:11:33,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:11:33,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:11:33,008 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:11:33,008 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:11:33,011 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:11:33,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:33,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:33,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:33,025 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:33,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-31 22:11:33,027 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 22:11:33,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:11:33,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:11:33,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:11:33,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:11:33,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:11:33,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:11:33,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:11:33,041 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:11:33,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:33,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:33,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:33,056 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:33,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-31 22:11:33,058 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 22:11:33,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:11:33,069 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:11:33,070 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:11:33,070 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:11:33,070 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:11:33,071 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:11:33,071 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:11:33,074 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:11:33,076 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-31 22:11:33,076 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:11:33,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:11:33,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:33,079 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:33,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-31 22:11:33,081 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:11:33,082 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:11:33,082 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:11:33,082 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-10-31 22:11:33,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:33,101 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:11:33,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:33,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:11:33,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:33,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:11:33,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:33,504 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 22:11:33,505 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 22:11:33,505 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:11:33,581 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 32 states and 38 transitions. Complement of second has 9 states. [2024-10-31 22:11:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2024-10-31 22:11:33,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:11:33,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2024-10-31 22:11:33,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 22 letters. Loop has 3 letters. [2024-10-31 22:11:33,583 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:11:33,583 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:11:33,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:33,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:11:33,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:33,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:11:33,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:33,912 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 22:11:33,912 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-31 22:11:33,913 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:11:33,985 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 32 states and 38 transitions. Complement of second has 9 states. [2024-10-31 22:11:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2024-10-31 22:11:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:11:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2024-10-31 22:11:33,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 22 letters. Loop has 3 letters. [2024-10-31 22:11:33,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:11:33,987 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:11:34,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:34,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:11:34,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:34,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:34,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:11:34,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:34,291 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 22:11:34,292 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-31 22:11:34,292 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:11:34,431 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 54 states and 66 transitions. Complement of second has 17 states. [2024-10-31 22:11:34,433 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 22:11:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:11:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2024-10-31 22:11:34,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 22 letters. Loop has 3 letters. [2024-10-31 22:11:34,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:11:34,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 25 letters. Loop has 3 letters. [2024-10-31 22:11:34,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:11:34,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 22 letters. Loop has 6 letters. [2024-10-31 22:11:34,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:11:34,436 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 66 transitions. [2024-10-31 22:11:34,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 22:11:34,442 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 42 states and 53 transitions. [2024-10-31 22:11:34,442 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2024-10-31 22:11:34,442 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2024-10-31 22:11:34,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 53 transitions. [2024-10-31 22:11:34,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:11:34,442 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 53 transitions. [2024-10-31 22:11:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 53 transitions. [2024-10-31 22:11:34,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-10-31 22:11:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2024-10-31 22:11:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2024-10-31 22:11:34,451 INFO L240 hiAutomatonCegarLoop]: Abstraction has 40 states and 49 transitions. [2024-10-31 22:11:34,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:34,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:11:34,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:11:34,452 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-31 22:11:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:11:34,518 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-10-31 22:11:34,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 30 transitions. [2024-10-31 22:11:34,519 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-31 22:11:34,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 0 states and 0 transitions. [2024-10-31 22:11:34,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-31 22:11:34,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-31 22:11:34,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-31 22:11:34,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:11:34,520 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:11:34,520 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:11:34,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:11:34,521 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:11:34,521 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 22:11:34,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-31 22:11:34,522 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-31 22:11:34,522 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-31 22:11:34,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 31.10 10:11:34 BoogieIcfgContainer [2024-10-31 22:11:34,530 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-31 22:11:34,531 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:11:34,531 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:11:34,531 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:11:34,531 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:29" (3/4) ... [2024-10-31 22:11:34,534 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:11:34,535 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:11:34,536 INFO L158 Benchmark]: Toolchain (without parser) took 6051.42ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 108.8MB in the beginning and 125.7MB in the end (delta: -16.8MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. [2024-10-31 22:11:34,536 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 146.8MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:11:34,537 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.05ms. Allocated memory is still 146.8MB. Free memory was 108.8MB in the beginning and 97.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-31 22:11:34,537 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.58ms. Allocated memory is still 146.8MB. Free memory was 97.4MB in the beginning and 96.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:11:34,538 INFO L158 Benchmark]: Boogie Preprocessor took 36.27ms. Allocated memory is still 146.8MB. Free memory was 96.3MB in the beginning and 94.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:11:34,538 INFO L158 Benchmark]: RCFGBuilder took 426.31ms. Allocated memory is still 146.8MB. Free memory was 94.8MB in the beginning and 84.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-31 22:11:34,539 INFO L158 Benchmark]: BuchiAutomizer took 5228.77ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 84.3MB in the beginning and 126.7MB in the end (delta: -42.4MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2024-10-31 22:11:34,539 INFO L158 Benchmark]: Witness Printer took 4.74ms. Allocated memory is still 197.1MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:11:34,542 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 146.8MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.05ms. Allocated memory is still 146.8MB. Free memory was 108.8MB in the beginning and 97.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.58ms. Allocated memory is still 146.8MB. Free memory was 97.4MB in the beginning and 96.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.27ms. Allocated memory is still 146.8MB. Free memory was 96.3MB in the beginning and 94.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 426.31ms. Allocated memory is still 146.8MB. Free memory was 94.8MB in the beginning and 84.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 5228.77ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 84.3MB in the beginning and 126.7MB in the end (delta: -42.4MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Witness Printer took 4.74ms. Allocated memory is still 197.1MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(j) and consists of 5 locations. One deterministic module has affine ranking function \old(i) and consists of 6 locations. One nondeterministic module has affine ranking function \old(i) and consists of 6 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 2.7s. Construction of modules took 0.2s. Büchi inclusion checks took 2.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 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, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 283 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 189 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 132 IncrementalHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 94 mSDtfsCounter, 132 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-31 22:11:34,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e58e11-74c0-477c-81dd-e0cd3aff3e93/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE