./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:23:44,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:23:44,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:23:44,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:23:44,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:23:44,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:23:44,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:23:44,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:23:44,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:23:44,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:23:44,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:23:44,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:23:44,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:23:44,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:23:44,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:23:44,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:23:44,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:23:44,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:23:44,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:23:44,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:23:44,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:23:44,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:23:44,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:23:44,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:23:44,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:23:44,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:23:44,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:23:44,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:23:44,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:23:44,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:23:44,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:23:44,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:23:44,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:23:44,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:23:44,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:23:44,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:23:44,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:23:44,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:23:44,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:23:44,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:23:44,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:23:44,553 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-10-17 10:23:44,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:23:44,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:23:44,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:23:44,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:23:44,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:23:44,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:23:44,581 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:23:44,581 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:23:44,581 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:23:44,582 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:23:44,582 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:23:44,583 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:23:44,583 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:23:44,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:23:44,584 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:23:44,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:23:44,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:23:44,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:23:44,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:23:44,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:23:44,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:23:44,587 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:23:44,587 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:23:44,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:23:44,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:23:44,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:23:44,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:23:44,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:23:44,589 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:23:44,590 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a [2022-10-17 10:23:44,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:23:44,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:23:44,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:23:44,889 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:23:44,890 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:23:44,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2022-10-17 10:23:44,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/data/4584ed159/1696cfec3a6544cbae643fd2ade77a5e/FLAGd8409160d [2022-10-17 10:23:45,374 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:23:45,375 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2022-10-17 10:23:45,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/data/4584ed159/1696cfec3a6544cbae643fd2ade77a5e/FLAGd8409160d [2022-10-17 10:23:45,788 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/data/4584ed159/1696cfec3a6544cbae643fd2ade77a5e [2022-10-17 10:23:45,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:23:45,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:23:45,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:23:45,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:23:45,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:23:45,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:23:45" (1/1) ... [2022-10-17 10:23:45,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1d6d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:45, skipping insertion in model container [2022-10-17 10:23:45,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:23:45" (1/1) ... [2022-10-17 10:23:45,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:23:45,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:23:46,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:23:46,045 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:23:46,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:23:46,075 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:23:46,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46 WrapperNode [2022-10-17 10:23:46,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:23:46,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:23:46,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:23:46,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:23:46,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (1/1) ... [2022-10-17 10:23:46,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (1/1) ... [2022-10-17 10:23:46,115 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9 [2022-10-17 10:23:46,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:23:46,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:23:46,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:23:46,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:23:46,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (1/1) ... [2022-10-17 10:23:46,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (1/1) ... [2022-10-17 10:23:46,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (1/1) ... [2022-10-17 10:23:46,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (1/1) ... [2022-10-17 10:23:46,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (1/1) ... [2022-10-17 10:23:46,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (1/1) ... [2022-10-17 10:23:46,143 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (1/1) ... [2022-10-17 10:23:46,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (1/1) ... [2022-10-17 10:23:46,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:23:46,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:23:46,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:23:46,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:23:46,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (1/1) ... [2022-10-17 10:23:46,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:46,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:46,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:46,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:23:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-10-17 10:23:46,226 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2022-10-17 10:23:46,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:23:46,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:23:46,283 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:23:46,285 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:23:46,371 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:23:46,378 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:23:46,379 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:23:46,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:23:46 BoogieIcfgContainer [2022-10-17 10:23:46,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:23:46,382 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:23:46,382 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:23:46,395 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:23:46,396 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:23:46,396 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:23:45" (1/3) ... [2022-10-17 10:23:46,397 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f2cd507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:23:46, skipping insertion in model container [2022-10-17 10:23:46,397 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:23:46,397 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:46" (2/3) ... [2022-10-17 10:23:46,398 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f2cd507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:23:46, skipping insertion in model container [2022-10-17 10:23:46,398 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:23:46,398 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:23:46" (3/3) ... [2022-10-17 10:23:46,399 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_2b.c [2022-10-17 10:23:46,455 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:23:46,456 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:23:46,456 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:23:46,456 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:23:46,456 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:23:46,456 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:23:46,456 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:23:46,456 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:23:46,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:23:46,482 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-10-17 10:23:46,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:23:46,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:23:46,490 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 10:23:46,490 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:23:46,491 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:23:46,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:23:46,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-10-17 10:23:46,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:23:46,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:23:46,494 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 10:23:46,494 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:23:46,503 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 12#L20true assume !(main_~x~0#1 < 0); 11#L21true call main_#t~ret3#1 := g(main_~x~0#1);< 7#gENTRYtrue [2022-10-17 10:23:46,503 INFO L750 eck$LassoCheckResult]: Loop: 7#gENTRYtrue ~x := #in~x; 8#L12true assume !(0 == ~x); 5#L15true call #t~ret0 := g(~x - 1);< 7#gENTRYtrue [2022-10-17 10:23:46,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1202733, now seen corresponding path program 1 times [2022-10-17 10:23:46,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:46,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530991868] [2022-10-17 10:23:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:46,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:46,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:23:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:46,633 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:23:46,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:46,637 INFO L85 PathProgramCache]: Analyzing trace with hash 29937, now seen corresponding path program 1 times [2022-10-17 10:23:46,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:46,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422484567] [2022-10-17 10:23:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:46,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:46,645 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:23:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:46,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:23:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1470880581, now seen corresponding path program 1 times [2022-10-17 10:23:46,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:46,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396785032] [2022-10-17 10:23:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:46,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:46,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:23:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:46,676 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:23:46,821 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:23:46,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:23:46,838 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:23:46,839 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:23:46,839 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:23:46,839 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:46,839 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:23:46,839 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:23:46,840 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Loop [2022-10-17 10:23:46,840 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:23:46,840 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:23:46,856 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:46,889 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:46,893 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:46,900 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:46,904 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:47,000 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:23:47,001 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:23:47,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:47,014 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 10:23:47,046 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:47,046 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:47,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:47,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,089 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:47,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 10:23:47,119 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:47,119 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:47,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:47,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:47,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 10:23:47,198 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:47,199 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:47,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:47,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-10-17 10:23:47,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:47,238 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,270 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:47,271 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:47,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:47,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,308 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:47,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-10-17 10:23:47,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:47,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-10-17 10:23:47,383 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:23:47,383 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,460 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:47,460 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-4} Honda state: {g_#in~x=-4} Generalized eigenvectors: [{g_#in~x=0}, {g_#in~x=0}, {g_#in~x=-1}] Lambdas: [0, 5, 1] Nus: [0, 0] [2022-10-17 10:23:47,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:47,511 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:23:47,511 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:23:47,511 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:23:47,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:23:47,512 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:23:47,512 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:23:47,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:23:47,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2022-10-17 10:23:47,513 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:23:47,513 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:23:47,514 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:47,517 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:47,520 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:47,523 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:47,526 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:47,529 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:47,532 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:47,539 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:47,542 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:47,596 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:23:47,597 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:23:47,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,598 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-10-17 10:23:47,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:47,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,626 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:47,626 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:47,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:47,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,668 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:47,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-10-17 10:23:47,706 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:47,707 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:47,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:47,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,745 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:47,762 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-10-17 10:23:47,781 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:47,781 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:47,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:47,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,806 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-10-17 10:23:47,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:47,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,855 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:47,855 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:47,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:47,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,893 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:47,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-10-17 10:23:47,926 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:47,927 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:47,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:47,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:47,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:47,965 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:47,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-10-17 10:23:47,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:47,972 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:47,983 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:47,983 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3#1=0} Honda state: {ULTIMATE.start_main_#t~ret3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:48,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-10-17 10:23:48,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:48,008 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:48,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-10-17 10:23:48,013 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:48,013 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:48,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:48,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:48,045 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:48,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:23:48,050 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:48,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-10-17 10:23:48,104 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:23:48,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:48,107 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:23:48,107 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:23:48,107 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:23:48,107 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:23:48,107 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:23:48,107 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,107 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:23:48,107 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:23:48,107 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2022-10-17 10:23:48,108 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:23:48,108 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:23:48,110 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:48,120 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:48,127 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:48,131 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:48,137 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:48,140 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:48,156 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:48,159 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:48,167 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:48,234 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:23:48,239 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:23:48,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:48,242 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:48,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-10-17 10:23:48,246 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 [2022-10-17 10:23:48,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:23:48,254 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:23:48,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:23:48,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:23:48,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:23:48,256 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:23:48,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:23:48,271 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:23:48,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-10-17 10:23:48,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:48,298 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:48,300 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 [2022-10-17 10:23:48,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-10-17 10:23:48,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:23:48,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:23:48,308 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:23:48,308 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:23:48,308 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:23:48,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:23:48,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:23:48,342 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:23:48,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:48,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:48,364 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:48,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-10-17 10:23:48,366 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 [2022-10-17 10:23:48,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:23:48,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:23:48,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:23:48,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:23:48,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:23:48,374 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:23:48,374 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:23:48,389 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:23:48,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:48,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:48,411 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:48,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-10-17 10:23:48,412 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 [2022-10-17 10:23:48,419 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:23:48,420 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:23:48,420 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:23:48,420 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:23:48,420 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:23:48,421 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:23:48,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:23:48,426 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:23:48,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:48,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:48,450 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:48,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-10-17 10:23:48,454 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 [2022-10-17 10:23:48,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:23:48,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:23:48,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:23:48,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:23:48,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:23:48,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:23:48,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:23:48,466 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:23:48,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:48,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:48,488 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:48,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-10-17 10:23:48,491 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 [2022-10-17 10:23:48,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:23:48,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:23:48,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:23:48,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:23:48,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:23:48,508 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:23:48,508 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:23:48,533 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:23:48,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:48,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:48,572 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:48,574 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 [2022-10-17 10:23:48,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-10-17 10:23:48,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:23:48,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:23:48,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:23:48,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:23:48,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:23:48,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:23:48,584 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:23:48,585 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:23:48,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:48,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:48,606 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:48,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-10-17 10:23:48,609 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 [2022-10-17 10:23:48,616 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:23:48,616 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:23:48,616 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-10-17 10:23:48,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:23:48,631 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2022-10-17 10:23:48,631 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2022-10-17 10:23:48,659 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:23:48,699 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2022-10-17 10:23:48,699 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. [2022-10-17 10:23:48,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:48,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:48,708 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:48,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-10-17 10:23:48,718 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:23:48,730 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2022-10-17 10:23:48,730 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:23:48,731 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [1*g_#in~x >= 0] [2022-10-17 10:23:48,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:48,762 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2022-10-17 10:23:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:48,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:23:48,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:23:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:48,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:23:48,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:23:48,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:48,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:49,031 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 [2022-10-17 10:23:49,034 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:49,167 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 43 transitions. Complement of second has 13 states. [2022-10-17 10:23:49,169 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 [2022-10-17 10:23:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:49,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2022-10-17 10:23:49,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2022-10-17 10:23:49,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:23:49,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2022-10-17 10:23:49,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:23:49,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2022-10-17 10:23:49,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:23:49,180 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 43 transitions. [2022-10-17 10:23:49,184 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-10-17 10:23:49,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 20 states and 26 transitions. [2022-10-17 10:23:49,193 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-10-17 10:23:49,193 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2022-10-17 10:23:49,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2022-10-17 10:23:49,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:23:49,196 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-10-17 10:23:49,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2022-10-17 10:23:49,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-10-17 10:23:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-17 10:23:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-10-17 10:23:49,228 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-10-17 10:23:49,228 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-10-17 10:23:49,229 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-10-17 10:23:49,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2022-10-17 10:23:49,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-10-17 10:23:49,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:23:49,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:23:49,232 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:49,232 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:49,232 INFO L748 eck$LassoCheckResult]: Stem: 118#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 119#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 129#L20 assume !(main_~x~0#1 < 0); 126#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 128#gENTRY ~x := #in~x; 130#L12 assume !(0 == ~x); 121#L15 call #t~ret0 := g(~x - 1);< 127#gENTRY ~x := #in~x; 131#L12 assume 0 == ~x;#res := 1; 120#gFINAL assume true; 122#gEXIT >#23#return; 124#L15-1 [2022-10-17 10:23:49,233 INFO L750 eck$LassoCheckResult]: Loop: 124#L15-1 call #t~ret1 := g(1 + #t~ret0);< 125#gENTRY ~x := #in~x; 135#L12 assume !(0 == ~x); 123#L15 call #t~ret0 := g(~x - 1);< 125#gENTRY ~x := #in~x; 135#L12 assume 0 == ~x;#res := 1; 133#gFINAL assume true; 134#gEXIT >#23#return; 124#L15-1 [2022-10-17 10:23:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 1 times [2022-10-17 10:23:49,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:49,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377527526] [2022-10-17 10:23:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:49,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:49,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:23:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:49,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:23:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:49,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1500125133, now seen corresponding path program 1 times [2022-10-17 10:23:49,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:49,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885842969] [2022-10-17 10:23:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:49,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:49,284 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:23:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:49,296 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:23:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:49,299 INFO L85 PathProgramCache]: Analyzing trace with hash 122773219, now seen corresponding path program 1 times [2022-10-17 10:23:49,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:49,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658270804] [2022-10-17 10:23:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:49,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:49,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:23:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:49,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:23:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:23:49,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:49,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658270804] [2022-10-17 10:23:49,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658270804] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:23:49,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844315075] [2022-10-17 10:23:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:49,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:23:49,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:49,569 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:23:49,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-17 10:23:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:49,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:23:49,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:23:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:23:49,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:23:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:23:49,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844315075] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:23:49,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:23:49,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-10-17 10:23:49,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269264840] [2022-10-17 10:23:49,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:23:49,995 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:23:49,995 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:23:49,995 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:23:49,995 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:23:49,996 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:23:49,996 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:49,996 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:23:49,996 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:23:49,996 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2022-10-17 10:23:49,996 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:23:49,996 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:23:50,001 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:50,004 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:50,013 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:50,056 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:23:50,057 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:23:50,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:50,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:50,059 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:50,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:50,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:50,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-10-17 10:23:50,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:50,091 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:50,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:50,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:50,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:50,119 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:50,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-10-17 10:23:50,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:50,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:50,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-10-17 10:23:50,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:50,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:50,173 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:50,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:23:50,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:50,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-10-17 10:23:52,356 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:23:52,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-10-17 10:23:52,359 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:23:52,359 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:23:52,359 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:23:52,359 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:23:52,360 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:23:52,360 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:52,360 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:23:52,360 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:23:52,360 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2022-10-17 10:23:52,360 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:23:52,360 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:23:52,361 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:52,369 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:52,372 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:52,432 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:23:52,432 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:23:52,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:52,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:52,433 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:52,440 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 [2022-10-17 10:23:52,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:23:52,450 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:23:52,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:23:52,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:23:52,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:23:52,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:23:52,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:23:52,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-10-17 10:23:52,466 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:23:52,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:52,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:52,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:52,504 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:52,509 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 [2022-10-17 10:23:52,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:23:52,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:23:52,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:23:52,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:23:52,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:23:52,519 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:23:52,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:23:52,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-10-17 10:23:52,534 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:23:52,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:52,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:52,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:52,571 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:52,573 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 [2022-10-17 10:23:52,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:23:52,583 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:23:52,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:23:52,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:23:52,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:23:52,585 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:23:52,585 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:23:52,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-10-17 10:23:52,602 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:23:52,606 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:23:52,606 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:23:52,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:52,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:52,611 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:52,613 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:23:52,613 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:23:52,613 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:23:52,613 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#t~ret0) = -2*g_#t~ret0 + 1 Supporting invariants [] [2022-10-17 10:23:52,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-10-17 10:23:52,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:52,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:52,678 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:23:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:52,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:23:52,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:23:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:52,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:23:52,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:23:52,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:52,935 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-10-17 10:23:52,935 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6 Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:23:53,190 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 83 states and 121 transitions. Complement of second has 31 states. [2022-10-17 10:23:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-10-17 10:23:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:23:53,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 37 transitions. [2022-10-17 10:23:53,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 8 letters. [2022-10-17 10:23:53,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:23:53,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 19 letters. Loop has 8 letters. [2022-10-17 10:23:53,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:23:53,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 16 letters. [2022-10-17 10:23:53,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:23:53,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 121 transitions. [2022-10-17 10:23:53,204 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-10-17 10:23:53,209 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 59 states and 82 transitions. [2022-10-17 10:23:53,209 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2022-10-17 10:23:53,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-10-17 10:23:53,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 82 transitions. [2022-10-17 10:23:53,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:23:53,210 INFO L218 hiAutomatonCegarLoop]: Abstraction has 59 states and 82 transitions. [2022-10-17 10:23:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 82 transitions. [2022-10-17 10:23:53,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2022-10-17 10:23:53,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 15 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (18), 11 states have call predecessors, (18), 13 states have call successors, (18) [2022-10-17 10:23:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2022-10-17 10:23:53,221 INFO L240 hiAutomatonCegarLoop]: Abstraction has 53 states and 72 transitions. [2022-10-17 10:23:53,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:53,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:23:53,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:23:53,226 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:23:53,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:53,317 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-10-17 10:23:53,318 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 45 transitions. [2022-10-17 10:23:53,319 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-10-17 10:23:53,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 31 states and 35 transitions. [2022-10-17 10:23:53,321 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2022-10-17 10:23:53,321 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2022-10-17 10:23:53,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 35 transitions. [2022-10-17 10:23:53,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:23:53,321 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-10-17 10:23:53,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 35 transitions. [2022-10-17 10:23:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-10-17 10:23:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:23:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-10-17 10:23:53,326 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-10-17 10:23:53,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:23:53,327 INFO L428 stractBuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-10-17 10:23:53,327 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-10-17 10:23:53,327 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 28 transitions. [2022-10-17 10:23:53,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-10-17 10:23:53,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:23:53,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:23:53,329 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:53,330 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:23:53,330 INFO L748 eck$LassoCheckResult]: Stem: 565#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 566#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 576#L20 assume !(main_~x~0#1 < 0); 574#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 575#gENTRY ~x := #in~x; 578#L12 assume !(0 == ~x); 568#L15 call #t~ret0 := g(~x - 1);< 573#gENTRY ~x := #in~x; 579#L12 assume 0 == ~x;#res := 1; 567#gFINAL assume true; 569#gEXIT >#23#return; 571#L15-1 call #t~ret1 := g(1 + #t~ret0);< 581#gENTRY ~x := #in~x; 588#L12 assume !(0 == ~x); 570#L15 call #t~ret0 := g(~x - 1);< 572#gENTRY ~x := #in~x; 577#L12 assume !(0 == ~x); 580#L15 [2022-10-17 10:23:53,330 INFO L750 eck$LassoCheckResult]: Loop: 580#L15 call #t~ret0 := g(~x - 1);< 582#gENTRY ~x := #in~x; 584#L12 assume !(0 == ~x); 580#L15 [2022-10-17 10:23:53,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:53,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1443446059, now seen corresponding path program 2 times [2022-10-17 10:23:53,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:53,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557450720] [2022-10-17 10:23:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:53,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:53,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:23:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:53,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:23:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash 50937, now seen corresponding path program 2 times [2022-10-17 10:23:53,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:53,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044558423] [2022-10-17 10:23:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:53,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:23:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:53,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:23:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -488954971, now seen corresponding path program 3 times [2022-10-17 10:23:53,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:53,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542308234] [2022-10-17 10:23:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:53,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:53,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:23:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:23:53,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:53,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542308234] [2022-10-17 10:23:53,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542308234] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:23:53,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792681403] [2022-10-17 10:23:53,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:23:53,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:23:53,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:53,670 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:23:53,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-10-17 10:23:53,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-17 10:23:53,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:23:53,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:23:53,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:23:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:23:53,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:23:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:23:53,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792681403] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:23:53,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:23:53,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-10-17 10:23:53,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401770325] [2022-10-17 10:23:53,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:23:53,888 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:23:53,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:23:53,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:23:53,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:23:53,888 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:23:53,889 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:53,889 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:23:53,889 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:23:53,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration3_Loop [2022-10-17 10:23:53,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:23:53,889 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:23:53,892 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:53,894 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:53,896 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:53,902 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:23:53,940 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:23:53,940 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:23:53,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:53,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:53,947 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:53,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:53,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:53,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-10-17 10:23:53,975 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:53,975 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:54,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:54,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:54,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:54,015 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:54,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:54,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:54,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-10-17 10:23:54,034 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:54,034 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:54,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:54,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:54,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:54,075 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:54,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:54,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:54,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-10-17 10:23:54,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:54,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:54,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:54,163 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:54,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:23:54,165 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:54,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-10-17 10:23:55,106 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:55,106 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-5, g_~x=-7} Honda state: {g_#in~x=-5, g_~x=-7} Generalized eigenvectors: [{g_#in~x=-4, g_~x=-1}, {g_#in~x=3, g_~x=0}, {g_#in~x=-2, g_~x=0}] Lambdas: [1, 0, 0] Nus: [1, 0] [2022-10-17 10:23:55,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:55,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:23:55,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:55,128 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:55,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-10-17 10:23:55,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:23:55,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:23:55,139 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:23:55,139 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:23:55,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-10-17 10:23:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:23:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:23:55,161 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. cyclomatic complexity: 4 Second operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:23:55,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:55,327 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-10-17 10:23:55,327 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 29 transitions. [2022-10-17 10:23:55,329 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-10-17 10:23:55,332 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 29 transitions. [2022-10-17 10:23:55,333 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2022-10-17 10:23:55,333 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-10-17 10:23:55,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 29 transitions. [2022-10-17 10:23:55,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:23:55,334 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-10-17 10:23:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 29 transitions. [2022-10-17 10:23:55,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2022-10-17 10:23:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:23:55,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-10-17 10:23:55,340 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-10-17 10:23:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:23:55,341 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-10-17 10:23:55,341 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-10-17 10:23:55,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 23 transitions. [2022-10-17 10:23:55,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-10-17 10:23:55,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:23:55,343 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:23:55,344 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:55,344 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1] [2022-10-17 10:23:55,345 INFO L748 eck$LassoCheckResult]: Stem: 764#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 765#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 777#L20 assume !(main_~x~0#1 < 0); 773#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 776#gENTRY ~x := #in~x; 780#L12 assume !(0 == ~x); 772#L15 call #t~ret0 := g(~x - 1);< 774#gENTRY ~x := #in~x; 781#L12 assume 0 == ~x;#res := 1; 782#gFINAL assume true; 775#gEXIT >#23#return; 770#L15-1 [2022-10-17 10:23:55,345 INFO L750 eck$LassoCheckResult]: Loop: 770#L15-1 call #t~ret1 := g(1 + #t~ret0);< 778#gENTRY ~x := #in~x; 779#L12 assume !(0 == ~x); 769#L15 call #t~ret0 := g(~x - 1);< 771#gENTRY ~x := #in~x; 784#L12 assume !(0 == ~x); 767#L15 call #t~ret0 := g(~x - 1);< 783#gENTRY ~x := #in~x; 785#L12 assume 0 == ~x;#res := 1; 766#gFINAL assume true; 768#gEXIT >#23#return; 770#L15-1 [2022-10-17 10:23:55,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:55,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 2 times [2022-10-17 10:23:55,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:55,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307782197] [2022-10-17 10:23:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:55,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:55,356 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:23:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:55,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:23:55,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:55,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1133998729, now seen corresponding path program 2 times [2022-10-17 10:23:55,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:55,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970071577] [2022-10-17 10:23:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:55,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:55,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:23:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:55,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:23:55,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:55,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1734292557, now seen corresponding path program 4 times [2022-10-17 10:23:55,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:55,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130775437] [2022-10-17 10:23:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:55,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:55,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:23:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:55,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:23:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:55,688 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:23:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:23:55,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.10 10:23:55 BoogieIcfgContainer [2022-10-17 10:23:55,724 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-10-17 10:23:55,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:23:55,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:23:55,725 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:23:55,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:23:46" (3/4) ... [2022-10-17 10:23:55,729 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-10-17 10:23:55,772 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:23:55,772 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:23:55,774 INFO L158 Benchmark]: Toolchain (without parser) took 9981.06ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 59.8MB in the beginning and 45.1MB in the end (delta: 14.7MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2022-10-17 10:23:55,774 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 98.6MB. Free memory was 76.3MB in the beginning and 76.2MB in the end (delta: 91.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:23:55,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.97ms. Allocated memory is still 98.6MB. Free memory was 59.6MB in the beginning and 76.4MB in the end (delta: -16.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:23:55,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.22ms. Allocated memory is still 98.6MB. Free memory was 76.4MB in the beginning and 75.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:23:55,776 INFO L158 Benchmark]: Boogie Preprocessor took 27.38ms. Allocated memory is still 98.6MB. Free memory was 75.2MB in the beginning and 74.3MB in the end (delta: 921.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:23:55,776 INFO L158 Benchmark]: RCFGBuilder took 234.09ms. Allocated memory is still 98.6MB. Free memory was 74.3MB in the beginning and 65.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:23:55,776 INFO L158 Benchmark]: BuchiAutomizer took 9342.63ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 65.5MB in the beginning and 47.1MB in the end (delta: 18.4MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2022-10-17 10:23:55,777 INFO L158 Benchmark]: Witness Printer took 47.72ms. Allocated memory is still 121.6MB. Free memory was 47.1MB in the beginning and 45.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:23:55,780 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 98.6MB. Free memory was 76.3MB in the beginning and 76.2MB in the end (delta: 91.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.97ms. Allocated memory is still 98.6MB. Free memory was 59.6MB in the beginning and 76.4MB in the end (delta: -16.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.22ms. Allocated memory is still 98.6MB. Free memory was 76.4MB in the beginning and 75.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.38ms. Allocated memory is still 98.6MB. Free memory was 75.2MB in the beginning and 74.3MB in the end (delta: 921.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 234.09ms. Allocated memory is still 98.6MB. Free memory was 74.3MB in the beginning and 65.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 9342.63ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 65.5MB in the beginning and 47.1MB in the end (delta: 18.4MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. * Witness Printer took 47.72ms. Allocated memory is still 121.6MB. Free memory was 47.1MB in the beginning and 45.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. 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 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 5 locations. One deterministic module has affine ranking function -2 * aux-g(x - 1)-aux + 1 and consists of 10 locations. 2 modules have a trivial ranking function, the largest among these consists of 11 locations. The remainder module has 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.2s and 4 iterations. TraceHistogramMax:4. Analysis of lassos took 7.9s. Construction of modules took 0.2s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 141 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 242 IncrementalHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 49 mSDtfsCounter, 242 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq193 hnf92 smp100 dnf138 smp100 tf104 neg95 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 124ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1, x=0] [L15] RET g(x - 1) VAL [\old(x)=1, g(x - 1)=1, x=1] Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1, x=0] [L15] RET g(x - 1) VAL [\old(x)=1, g(x - 1)=1, x=1] Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-10-17 10:23:55,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-10-17 10:23:56,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-10-17 10:23:56,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278006b7-da91-45ee-9b9b-785c2ca1d1b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)