./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:28:30,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:28:30,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:28:30,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:28:30,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:28:30,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:28:30,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:28:30,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:28:30,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:28:30,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:28:30,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:28:30,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:28:30,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:28:30,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:28:30,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:28:30,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:28:30,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:28:30,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:28:30,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:28:30,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:28:30,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:28:30,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:28:30,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:28:30,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:28:30,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:28:30,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:28:30,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:28:30,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:28:30,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:28:30,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:28:30,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:28:30,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:28:30,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:28:30,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:28:30,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:28:30,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:28:30,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:28:30,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:28:30,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:28:30,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:28:30,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:28:30,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 19:28:30,777 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:28:30,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:28:30,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:28:30,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:28:30,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:28:30,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:28:30,780 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:28:30,781 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:28:30,781 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:28:30,781 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:28:30,782 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:28:30,782 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:28:30,782 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:28:30,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:28:30,783 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:28:30,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:28:30,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:28:30,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:28:30,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:28:30,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:28:30,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:28:30,785 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:28:30,785 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:28:30,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:28:30,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:28:30,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:28:30,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:28:30,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:28:30,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:28:30,791 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:28:30,791 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_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a [2021-10-21 19:28:31,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:28:31,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:28:31,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:28:31,197 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:28:31,198 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:28:31,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2021-10-21 19:28:31,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/data/033a123f5/4d9a0d8e3b9c48fc918acb4b826609f9/FLAG2edd0065c [2021-10-21 19:28:31,823 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:28:31,830 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2021-10-21 19:28:31,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/data/033a123f5/4d9a0d8e3b9c48fc918acb4b826609f9/FLAG2edd0065c [2021-10-21 19:28:32,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/data/033a123f5/4d9a0d8e3b9c48fc918acb4b826609f9 [2021-10-21 19:28:32,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:28:32,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:28:32,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:28:32,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:28:32,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:28:32,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7103c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32, skipping insertion in model container [2021-10-21 19:28:32,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:28:32,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:28:32,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:28:32,397 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:28:32,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:28:32,440 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:28:32,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32 WrapperNode [2021-10-21 19:28:32,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:28:32,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:28:32,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:28:32,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:28:32,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:28:32,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:28:32,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:28:32,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:28:32,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:28:32,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:28:32,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:28:32,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:28:32,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32" (1/1) ... [2021-10-21 19:28:32,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:32,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:32,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:32,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:28:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-21 19:28:32,644 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-21 19:28:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:28:32,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:28:32,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:28:32,847 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:28:32,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:28:32 BoogieIcfgContainer [2021-10-21 19:28:32,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:28:32,857 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:28:32,858 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:28:32,861 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:28:32,862 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:28:32,862 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:28:32" (1/3) ... [2021-10-21 19:28:32,868 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63d05e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:28:32, skipping insertion in model container [2021-10-21 19:28:32,869 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:28:32,869 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:28:32" (2/3) ... [2021-10-21 19:28:32,869 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63d05e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:28:32, skipping insertion in model container [2021-10-21 19:28:32,871 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:28:32,871 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:28:32" (3/3) ... [2021-10-21 19:28:32,873 INFO L389 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_2b.c [2021-10-21 19:28:32,933 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:28:32,934 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:28:32,934 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:28:32,934 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:28:32,934 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:28:32,935 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:28:32,935 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:28:32,935 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:28:32,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:28:32,984 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 19:28:32,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:32,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:32,994 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-21 19:28:32,995 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:28:32,995 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:28:32,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:28:32,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 19:28:33,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:33,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:33,001 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-21 19:28:33,001 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:28:33,014 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 12#L20true assume !(main_~x~0 < 0); 11#L21true call main_#t~ret3 := g(main_~x~0);< 7#gENTRYtrue [2021-10-21 19:28:33,015 INFO L793 eck$LassoCheckResult]: Loop: 7#gENTRYtrue ~x := #in~x; 8#L12true assume !(0 == ~x); 6#L15true call #t~ret0 := g(~x - 1);< 7#gENTRYtrue [2021-10-21 19:28:33,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:33,023 INFO L82 PathProgramCache]: Analyzing trace with hash 39891, now seen corresponding path program 1 times [2021-10-21 19:28:33,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:33,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915856528] [2021-10-21 19:28:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:33,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:33,130 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:33,155 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:33,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:33,160 INFO L82 PathProgramCache]: Analyzing trace with hash 29936, now seen corresponding path program 1 times [2021-10-21 19:28:33,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:33,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63021945] [2021-10-21 19:28:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:33,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:33,175 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:33,183 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:33,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1188392926, now seen corresponding path program 1 times [2021-10-21 19:28:33,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:33,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091279840] [2021-10-21 19:28:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:33,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:33,204 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:33,218 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:33,415 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:28:33,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:28:33,417 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:28:33,417 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:28:33,417 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:28:33,417 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:33,418 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:28:33,418 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:28:33,418 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Loop [2021-10-21 19:28:33,418 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:28:33,419 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:28:33,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:33,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:33,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:33,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:33,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:33,535 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:28:33,536 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:28:33,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:33,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:33,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:33,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:28:33,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:33,548 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:33,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:33,564 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:33,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:33,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:33,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:33,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:33,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:28:33,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:33,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:33,614 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:33,614 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:33,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:33,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:33,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:33,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:33,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:28:33,646 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:33,647 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:33,675 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:33,675 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:33,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-21 19:28:33,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:33,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:33,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:33,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:28:33,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:33,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:33,726 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:33,727 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:33,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:33,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:33,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:33,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:33,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:33,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:33,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:28:33,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:33,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:33,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:33,862 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:33,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:28:33,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:33,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:28:33,910 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:33,910 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-4} Honda state: {g_#in~x=-4} Generalized eigenvectors: [{g_#in~x=0}, {g_#in~x=0}, {g_#in~x=-1}] Lambdas: [0, 5, 1] Nus: [0, 0] [2021-10-21 19:28:33,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:34,002 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:28:34,004 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:28:34,004 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:28:34,004 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:28:34,004 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:28:34,005 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,005 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:28:34,005 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:28:34,005 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2021-10-21 19:28:34,005 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:28:34,006 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:28:34,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,122 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:28:34,122 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:28:34,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:34,127 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:34,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:34,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:34,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:28:34,159 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:34,160 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:34,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:34,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:34,208 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:34,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:28:34,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:34,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:34,242 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:34,242 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:34,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:34,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:34,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:34,294 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:34,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:34,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:28:34,323 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:34,324 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:34,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:34,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:34,370 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:34,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:34,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:34,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:28:34,401 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:34,401 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:34,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:34,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:34,427 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:34,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 19:28:34,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:34,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:34,440 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:34,440 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4=0} Honda state: {ULTIMATE.start_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:34,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:34,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:34,469 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:34,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 19:28:34,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:34,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:34,484 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:34,484 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:34,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:34,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:34,514 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:34,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 19:28:34,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:34,516 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:34,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:34,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:34,552 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:34,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 19:28:34,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:28:34,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:34,618 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:28:34,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:34,621 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:28:34,621 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:28:34,622 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:28:34,622 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:28:34,622 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:28:34,622 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,622 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:28:34,622 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:28:34,622 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2021-10-21 19:28:34,622 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:28:34,622 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:28:34,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:34,785 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:28:34,790 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:28:34,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:34,793 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:34,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 19:28:34,804 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:28:34,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:34,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:28:34,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:34,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:28:34,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:34,817 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:28:34,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:28:34,829 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:28:34,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:34,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:34,871 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:34,881 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:28:34,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:34,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:28:34,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:34,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:28:34,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:34,893 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:28:34,893 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:28:34,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 19:28:34,911 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:28:34,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:34,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:34,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:34,938 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:34,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-21 19:28:34,941 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:28:34,952 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:34,952 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:28:34,953 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:34,953 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:28:34,953 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:34,955 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:28:34,955 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:28:34,970 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:28:35,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:35,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:35,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:35,008 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:35,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 19:28:35,010 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:28:35,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:35,019 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:28:35,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:35,019 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:28:35,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:35,020 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:28:35,020 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:28:35,022 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:28:35,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:35,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:35,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:35,058 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:35,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 19:28:35,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:28:35,070 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:35,070 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:28:35,070 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:35,070 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:28:35,070 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:35,071 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:28:35,071 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:28:35,093 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:28:35,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-10-21 19:28:35,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:35,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:35,119 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:35,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 19:28:35,121 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:28:35,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:35,130 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:28:35,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:35,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:28:35,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:35,131 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:28:35,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:28:35,133 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:28:35,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:35,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:35,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:35,161 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:35,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-21 19:28:35,163 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:28:35,172 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:35,173 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:28:35,173 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:35,173 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:28:35,173 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:35,174 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:28:35,174 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:28:35,207 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:28:35,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:35,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:35,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:35,239 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:35,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-21 19:28:35,241 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:28:35,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:35,253 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:28:35,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:35,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:28:35,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:35,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:28:35,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:28:35,265 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:28:35,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:35,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:35,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:35,320 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:35,324 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:28:35,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-21 19:28:35,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:35,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:28:35,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:35,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:28:35,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:35,337 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:28:35,337 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:28:35,347 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:28:35,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:35,372 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:35,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:35,373 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:35,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-21 19:28:35,378 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:28:35,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:35,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:35,387 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-21 19:28:35,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:35,403 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-21 19:28:35,403 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-21 19:28:35,439 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:28:35,483 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2021-10-21 19:28:35,483 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. [2021-10-21 19:28:35,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:35,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:35,499 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:35,505 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:28:35,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-21 19:28:35,537 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-10-21 19:28:35,537 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:28:35,538 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [1*g_#in~x >= 0] [2021-10-21 19:28:35,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:35,572 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-21 19:28:35,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:35,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:28:35,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:28:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:35,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:28:35,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:28:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:28:35,847 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-21 19:28:35,849 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:36,016 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 42 transitions. Complement of second has 13 states. [2021-10-21 19:28:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:28:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:28:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2021-10-21 19:28:36,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2021-10-21 19:28:36,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:28:36,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-21 19:28:36,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:28:36,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-21 19:28:36,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:28:36,024 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 42 transitions. [2021-10-21 19:28:36,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 19:28:36,036 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 25 transitions. [2021-10-21 19:28:36,037 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-21 19:28:36,038 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-21 19:28:36,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2021-10-21 19:28:36,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:28:36,040 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-10-21 19:28:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2021-10-21 19:28:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-10-21 19:28:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-21 19:28:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-10-21 19:28:36,075 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-10-21 19:28:36,075 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-10-21 19:28:36,075 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:28:36,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2021-10-21 19:28:36,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 19:28:36,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:36,077 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:36,078 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:36,078 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:36,079 INFO L791 eck$LassoCheckResult]: Stem: 114#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 115#L20 assume !(main_~x~0 < 0); 119#L21 call main_#t~ret3 := g(main_~x~0);< 125#gENTRY ~x := #in~x; 126#L12 assume !(0 == ~x); 118#L15 call #t~ret0 := g(~x - 1);< 123#gENTRY ~x := #in~x; 127#L12 assume 0 == ~x;#res := 1; 129#gFINAL assume true; 124#gEXIT >#22#return; 117#L15-1 [2021-10-21 19:28:36,079 INFO L793 eck$LassoCheckResult]: Loop: 117#L15-1 call #t~ret1 := g(1 + #t~ret0);< 122#gENTRY ~x := #in~x; 130#L12 assume !(0 == ~x); 120#L15 call #t~ret0 := g(~x - 1);< 122#gENTRY ~x := #in~x; 130#L12 assume 0 == ~x;#res := 1; 116#gFINAL assume true; 121#gEXIT >#22#return; 117#L15-1 [2021-10-21 19:28:36,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:36,080 INFO L82 PathProgramCache]: Analyzing trace with hash -54633169, now seen corresponding path program 1 times [2021-10-21 19:28:36,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:36,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265713403] [2021-10-21 19:28:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:36,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:36,090 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:36,100 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:36,101 INFO L82 PathProgramCache]: Analyzing trace with hash -243608724, now seen corresponding path program 1 times [2021-10-21 19:28:36,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:36,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196047038] [2021-10-21 19:28:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:36,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:36,110 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:36,119 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:36,120 INFO L82 PathProgramCache]: Analyzing trace with hash -791141734, now seen corresponding path program 1 times [2021-10-21 19:28:36,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:36,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398926946] [2021-10-21 19:28:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:36,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-21 19:28:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:36,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-21 19:28:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:28:36,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:28:36,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398926946] [2021-10-21 19:28:36,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398926946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:28:36,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070325862] [2021-10-21 19:28:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:36,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:28:36,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:36,260 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:28:36,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-21 19:28:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:36,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:28:36,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:28:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:28:36,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070325862] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:28:36,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:28:36,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-21 19:28:36,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040971846] [2021-10-21 19:28:36,572 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:28:36,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:28:36,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:28:36,573 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:28:36,573 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:28:36,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:36,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:28:36,573 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:28:36,573 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2021-10-21 19:28:36,574 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:28:36,574 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:28:36,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:36,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:36,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:36,661 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:28:36,661 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:28:36,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:36,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:36,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:36,704 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:36,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:36,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:36,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-21 19:28:36,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:36,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:36,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:36,794 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:36,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:28:36,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:36,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-21 19:28:39,349 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:28:39,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-10-21 19:28:39,353 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:28:39,353 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:28:39,353 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:28:39,353 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:28:39,353 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:28:39,353 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:39,353 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:28:39,353 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:28:39,353 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2021-10-21 19:28:39,353 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:28:39,353 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:28:39,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:39,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:39,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:39,425 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:28:39,425 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:28:39,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:39,427 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:39,429 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:28:39,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:39,440 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:28:39,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:39,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:28:39,441 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:39,442 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:28:39,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:28:39,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-21 19:28:39,459 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:28:39,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:39,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:39,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:39,505 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:39,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-21 19:28:39,509 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 [2021-10-21 19:28:39,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:28:39,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:28:39,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:28:39,521 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:28:39,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:28:39,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:28:39,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:28:39,555 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:28:39,560 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:28:39,560 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:28:39,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:39,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:39,564 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:39,566 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:28:39,566 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:28:39,567 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:28:39,567 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#t~ret0) = -2*g_#t~ret0 + 1 Supporting invariants [] [2021-10-21 19:28:39,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-21 19:28:39,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:39,610 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:28:39,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:39,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:28:39,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:28:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:39,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:28:39,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:28:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:28:40,024 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2021-10-21 19:28:40,025 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:28:40,361 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 82 states and 120 transitions. Complement of second has 31 states. [2021-10-21 19:28:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-21 19:28:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:28:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 36 transitions. [2021-10-21 19:28:40,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 10 letters. Loop has 8 letters. [2021-10-21 19:28:40,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:28:40,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 18 letters. Loop has 8 letters. [2021-10-21 19:28:40,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:28:40,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 10 letters. Loop has 16 letters. [2021-10-21 19:28:40,367 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:28:40,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 120 transitions. [2021-10-21 19:28:40,376 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-10-21 19:28:40,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 58 states and 81 transitions. [2021-10-21 19:28:40,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-21 19:28:40,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-21 19:28:40,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 81 transitions. [2021-10-21 19:28:40,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:28:40,383 INFO L681 BuchiCegarLoop]: Abstraction has 58 states and 81 transitions. [2021-10-21 19:28:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 81 transitions. [2021-10-21 19:28:40,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2021-10-21 19:28:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 15 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (18), 11 states have call predecessors, (18), 13 states have call successors, (18) [2021-10-21 19:28:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-10-21 19:28:40,398 INFO L704 BuchiCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-10-21 19:28:40,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:28:40,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:28:40,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:28:40,403 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:28:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:28:40,490 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-10-21 19:28:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:28:40,491 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 44 transitions. [2021-10-21 19:28:40,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-21 19:28:40,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 30 states and 34 transitions. [2021-10-21 19:28:40,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-21 19:28:40,495 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-21 19:28:40,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 34 transitions. [2021-10-21 19:28:40,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:28:40,495 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-10-21 19:28:40,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 34 transitions. [2021-10-21 19:28:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-10-21 19:28:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 7 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:28:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-10-21 19:28:40,499 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-21 19:28:40,499 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-21 19:28:40,499 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:28:40,500 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 27 transitions. [2021-10-21 19:28:40,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-21 19:28:40,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:40,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:40,501 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:40,502 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:28:40,502 INFO L791 eck$LassoCheckResult]: Stem: 495#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 496#L20 assume !(main_~x~0 < 0); 503#L21 call main_#t~ret3 := g(main_~x~0);< 509#gENTRY ~x := #in~x; 510#L12 assume !(0 == ~x); 498#L15 call #t~ret0 := g(~x - 1);< 504#gENTRY ~x := #in~x; 511#L12 assume 0 == ~x;#res := 1; 497#gFINAL assume true; 499#gEXIT >#22#return; 501#L15-1 call #t~ret1 := g(1 + #t~ret0);< 513#gENTRY ~x := #in~x; 512#L12 assume !(0 == ~x); 500#L15 call #t~ret0 := g(~x - 1);< 502#gENTRY ~x := #in~x; 519#L12 assume !(0 == ~x); 507#L15 [2021-10-21 19:28:40,502 INFO L793 eck$LassoCheckResult]: Loop: 507#L15 call #t~ret0 := g(~x - 1);< 514#gENTRY ~x := #in~x; 515#L12 assume !(0 == ~x); 507#L15 [2021-10-21 19:28:40,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:40,503 INFO L82 PathProgramCache]: Analyzing trace with hash 2001409165, now seen corresponding path program 2 times [2021-10-21 19:28:40,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:40,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368393057] [2021-10-21 19:28:40,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:40,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:40,517 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:40,530 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash 49976, now seen corresponding path program 2 times [2021-10-21 19:28:40,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:40,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012515017] [2021-10-21 19:28:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:40,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:40,536 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:40,541 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:40,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:40,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1244451628, now seen corresponding path program 3 times [2021-10-21 19:28:40,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:40,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109656878] [2021-10-21 19:28:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:40,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:40,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-21 19:28:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:28:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:28:40,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:28:40,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109656878] [2021-10-21 19:28:40,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109656878] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:28:40,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337575281] [2021-10-21 19:28:40,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:28:40,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:28:40,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:40,696 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:28:40,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-21 19:28:40,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-21 19:28:40,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:28:40,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:28:40,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:28:40,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:28:40,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337575281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:28:40,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:28:40,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-21 19:28:40,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024868428] [2021-10-21 19:28:41,047 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:28:41,047 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:28:41,047 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:28:41,047 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:28:41,047 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:28:41,048 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:41,048 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:28:41,048 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:28:41,048 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration3_Loop [2021-10-21 19:28:41,048 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:28:41,048 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:28:41,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:41,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:41,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:41,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:28:41,110 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:28:41,110 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:28:41,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:41,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:41,112 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:41,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:41,114 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:41,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-21 19:28:41,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:41,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:41,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:41,186 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:41,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-21 19:28:41,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:28:41,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:42,179 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:42,179 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-5, g_~x=-7} Honda state: {g_#in~x=-5, g_~x=-7} Generalized eigenvectors: [{g_#in~x=-4, g_~x=-1}, {g_#in~x=3, g_~x=0}, {g_#in~x=-2, g_~x=0}] Lambdas: [1, 0, 0] Nus: [1, 0] [2021-10-21 19:28:42,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-21 19:28:42,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:42,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:42,206 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:42,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:42,208 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:42,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-21 19:28:42,218 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:42,218 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:42,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-21 19:28:42,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:42,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:42,244 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:42,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-21 19:28:42,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:42,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:42,258 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:42,258 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:42,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:42,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:28:42,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:28:42,285 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:28:42,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-21 19:28:42,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:28:42,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:28:42,297 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:28:42,297 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:28:42,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-10-21 19:28:42,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:28:42,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:28:42,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:28:42,322 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. cyclomatic complexity: 4 Second operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:28:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:28:42,503 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-21 19:28:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:28:42,503 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 28 transitions. [2021-10-21 19:28:42,505 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-21 19:28:42,505 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 28 transitions. [2021-10-21 19:28:42,506 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-21 19:28:42,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-21 19:28:42,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 28 transitions. [2021-10-21 19:28:42,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:28:42,506 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-21 19:28:42,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 28 transitions. [2021-10-21 19:28:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-10-21 19:28:42,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:28:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-21 19:28:42,509 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-21 19:28:42,509 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-21 19:28:42,509 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:28:42,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 22 transitions. [2021-10-21 19:28:42,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-21 19:28:42,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:28:42,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:28:42,511 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:28:42,515 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1] [2021-10-21 19:28:42,515 INFO L791 eck$LassoCheckResult]: Stem: 632#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 633#L20 assume !(main_~x~0 < 0); 640#L21 call main_#t~ret3 := g(main_~x~0);< 644#gENTRY ~x := #in~x; 647#L12 assume !(0 == ~x); 635#L15 call #t~ret0 := g(~x - 1);< 641#gENTRY ~x := #in~x; 648#L12 assume 0 == ~x;#res := 1; 634#gFINAL assume true; 636#gEXIT >#22#return; 638#L15-1 [2021-10-21 19:28:42,515 INFO L793 eck$LassoCheckResult]: Loop: 638#L15-1 call #t~ret1 := g(1 + #t~ret0);< 645#gENTRY ~x := #in~x; 646#L12 assume !(0 == ~x); 637#L15 call #t~ret0 := g(~x - 1);< 639#gENTRY ~x := #in~x; 652#L12 assume !(0 == ~x); 643#L15 call #t~ret0 := g(~x - 1);< 651#gENTRY ~x := #in~x; 649#L12 assume 0 == ~x;#res := 1; 650#gFINAL assume true; 642#gEXIT >#22#return; 638#L15-1 [2021-10-21 19:28:42,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:42,516 INFO L82 PathProgramCache]: Analyzing trace with hash -54633169, now seen corresponding path program 2 times [2021-10-21 19:28:42,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:42,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319155489] [2021-10-21 19:28:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:42,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:42,531 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:42,550 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:42,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:42,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1187216231, now seen corresponding path program 2 times [2021-10-21 19:28:42,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:42,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615989328] [2021-10-21 19:28:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:42,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:42,574 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:42,587 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:42,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:28:42,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1917105529, now seen corresponding path program 4 times [2021-10-21 19:28:42,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:28:42,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531995498] [2021-10-21 19:28:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:28:42,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:28:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:42,607 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:28:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:28:42,623 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:28:43,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:28:43 BoogieIcfgContainer [2021-10-21 19:28:43,003 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:28:43,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:28:43,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:28:43,004 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:28:43,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:28:32" (3/4) ... [2021-10-21 19:28:43,008 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:28:43,059 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:28:43,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:28:43,062 INFO L168 Benchmark]: Toolchain (without parser) took 10880.36 ms. Allocated memory was 81.8 MB in the beginning and 142.6 MB in the end (delta: 60.8 MB). Free memory was 45.0 MB in the beginning and 66.4 MB in the end (delta: -21.5 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:28:43,062 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory is still 61.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:28:43,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.87 ms. Allocated memory was 81.8 MB in the beginning and 117.4 MB in the end (delta: 35.7 MB). Free memory was 44.8 MB in the beginning and 96.5 MB in the end (delta: -51.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:28:43,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.44 ms. Allocated memory is still 117.4 MB. Free memory was 96.5 MB in the beginning and 95.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:28:43,064 INFO L168 Benchmark]: Boogie Preprocessor took 22.35 ms. Allocated memory is still 117.4 MB. Free memory was 95.2 MB in the beginning and 94.4 MB in the end (delta: 736.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:28:43,065 INFO L168 Benchmark]: RCFGBuilder took 323.21 ms. Allocated memory is still 117.4 MB. Free memory was 94.4 MB in the beginning and 86.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:28:43,066 INFO L168 Benchmark]: BuchiAutomizer took 10145.66 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 86.1 MB in the beginning and 67.5 MB in the end (delta: 18.6 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:28:43,066 INFO L168 Benchmark]: Witness Printer took 56.25 ms. Allocated memory is still 142.6 MB. Free memory was 67.5 MB in the beginning and 66.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:28:43,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory is still 61.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.87 ms. Allocated memory was 81.8 MB in the beginning and 117.4 MB in the end (delta: 35.7 MB). Free memory was 44.8 MB in the beginning and 96.5 MB in the end (delta: -51.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.44 ms. Allocated memory is still 117.4 MB. Free memory was 96.5 MB in the beginning and 95.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.35 ms. Allocated memory is still 117.4 MB. Free memory was 95.2 MB in the beginning and 94.4 MB in the end (delta: 736.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 323.21 ms. Allocated memory is still 117.4 MB. Free memory was 94.4 MB in the beginning and 86.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 10145.66 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 86.1 MB in the beginning and 67.5 MB in the end (delta: 18.6 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. * Witness Printer took 56.25 ms. Allocated memory is still 142.6 MB. Free memory was 67.5 MB in the beginning and 66.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 5 locations. One deterministic module has affine ranking function -2 * aux-g(x - 1)-aux + 1 and consists of 10 locations. 2 modules have a trivial ranking function, the largest among these consists of 10 locations. The remainder module has 21 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.0s and 4 iterations. TraceHistogramMax:4. Analysis of lassos took 8.3s. Construction of modules took 0.2s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 38.0ms AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 46 SDtfs, 60 SDslu, 98 SDs, 0 SdLazy, 228 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 264.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq194 hnf92 smp100 dnf139 smp100 tf104 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 164ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34200460=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34f227dc=1, \result=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10055723=0, \old(x)=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1dfc4c74=0, x=0, x=1, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) [L21] CALL g(x) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:28:43,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:43,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:43,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559cd916-c444-4db6-9dc9-ff877175c227/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...