./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 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:07:27,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:07:27,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:07:27,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:07:27,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:07:27,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:07:27,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:07:27,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:07:27,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:07:27,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:07:27,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:07:27,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:07:27,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:07:27,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:07:27,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:07:27,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:07:27,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:07:27,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:07:27,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:07:27,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:07:27,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:07:27,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:07:27,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:07:27,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:07:27,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:07:27,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:07:27,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:07:27,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:07:27,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:07:27,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:07:27,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:07:27,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:07:27,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:07:27,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:07:27,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:07:27,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:07:27,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:07:27,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:07:27,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:07:27,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:07:27,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:07:27,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-02 22:07:27,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:07:27,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:07:27,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:07:27,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:07:27,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:07:27,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:07:27,851 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:07:27,851 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-02 22:07:27,851 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-02 22:07:27,852 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-02 22:07:27,852 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-02 22:07:27,860 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-02 22:07:27,860 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-02 22:07:27,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:07:27,861 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:07:27,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:07:27,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:07:27,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-02 22:07:27,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-02 22:07:27,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-02 22:07:27,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:07:27,862 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-02 22:07:27,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:07:27,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-02 22:07:27,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:07:27,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:07:27,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:07:27,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:07:27,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:07:27,868 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-02 22:07:27,868 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_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a [2021-11-02 22:07:28,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:07:28,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:07:28,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:07:28,262 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:07:28,263 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:07:28,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2021-11-02 22:07:28,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/data/2b8861f7e/f1feb4bbcb8b4d6d8754b428fc316875/FLAGc39e86be0 [2021-11-02 22:07:28,835 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:07:28,836 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2021-11-02 22:07:28,843 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/data/2b8861f7e/f1feb4bbcb8b4d6d8754b428fc316875/FLAGc39e86be0 [2021-11-02 22:07:29,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/data/2b8861f7e/f1feb4bbcb8b4d6d8754b428fc316875 [2021-11-02 22:07:29,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:07:29,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:07:29,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:07:29,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:07:29,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:07:29,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f1a342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29, skipping insertion in model container [2021-11-02 22:07:29,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:07:29,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:07:29,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:07:29,412 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:07:29,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:07:29,446 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:07:29,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29 WrapperNode [2021-11-02 22:07:29,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:07:29,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:07:29,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:07:29,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:07:29,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:07:29,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:07:29,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:07:29,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:07:29,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:07:29,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:07:29,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:07:29,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:07:29,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29" (1/1) ... [2021-11-02 22:07:29,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:29,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:29,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:29,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-02 22:07:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-11-02 22:07:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-11-02 22:07:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:07:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:07:29,787 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:07:29,788 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-02 22:07:29,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:07:29 BoogieIcfgContainer [2021-11-02 22:07:29,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:07:29,792 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-02 22:07:29,792 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-02 22:07:29,796 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-02 22:07:29,797 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:07:29,797 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 10:07:29" (1/3) ... [2021-11-02 22:07:29,799 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3597c432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:07:29, skipping insertion in model container [2021-11-02 22:07:29,799 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:07:29,799 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:29" (2/3) ... [2021-11-02 22:07:29,800 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3597c432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:07:29, skipping insertion in model container [2021-11-02 22:07:29,800 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:07:29,800 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:07:29" (3/3) ... [2021-11-02 22:07:29,802 INFO L389 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_2b.c [2021-11-02 22:07:29,883 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-02 22:07:29,883 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-02 22:07:29,884 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-02 22:07:29,884 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-02 22:07:29,884 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-02 22:07:29,884 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-02 22:07:29,884 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-02 22:07:29,884 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-02 22:07:29,896 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) [2021-11-02 22:07:29,918 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-02 22:07:29,919 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:29,919 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:29,927 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-02 22:07:29,927 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-02 22:07:29,927 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-02 22:07:29,927 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) [2021-11-02 22:07:29,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-02 22:07:29,930 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:29,930 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:29,931 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-02 22:07:29,931 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-02 22:07:29,938 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 [2021-11-02 22:07:29,938 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 [2021-11-02 22:07:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash 39891, now seen corresponding path program 1 times [2021-11-02 22:07:29,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:29,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645108768] [2021-11-02 22:07:29,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:29,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:30,043 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:30,080 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:30,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:30,085 INFO L85 PathProgramCache]: Analyzing trace with hash 29936, now seen corresponding path program 1 times [2021-11-02 22:07:30,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:30,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088227608] [2021-11-02 22:07:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:30,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:30,113 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:30,128 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:30,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:30,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1188392926, now seen corresponding path program 1 times [2021-11-02 22:07:30,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:30,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203892612] [2021-11-02 22:07:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:30,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:30,152 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:30,161 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:30,334 INFO L210 LassoAnalysis]: Preferences: [2021-11-02 22:07:30,336 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-02 22:07:30,336 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-02 22:07:30,336 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-02 22:07:30,337 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-02 22:07:30,337 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:30,337 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-02 22:07:30,337 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-02 22:07:30,337 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Loop [2021-11-02 22:07:30,338 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-02 22:07:30,338 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-02 22:07:30,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,497 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-02 22:07:30,498 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-02 22:07:30,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:30,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:30,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:30,506 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:30,506 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:30,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-02 22:07:30,537 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:30,537 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-02 22:07:30,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:30,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:30,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:30,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:30,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:30,583 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:30,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-02 22:07:30,617 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:30,617 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-02 22:07:30,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:30,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:30,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:30,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:30,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:30,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:30,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-02 22:07:30,685 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:30,685 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-02 22:07:30,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:30,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:30,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:30,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:30,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:30,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:30,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-02 22:07:30,741 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:30,741 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-02 22:07:30,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:30,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:30,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:30,768 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:30,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-02 22:07:30,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:30,774 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:30,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:30,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:30,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:30,825 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:30,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-02 22:07:30,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-02 22:07:30,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:30,863 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:30,863 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] [2021-11-02 22:07:30,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:30,936 INFO L210 LassoAnalysis]: Preferences: [2021-11-02 22:07:30,936 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-02 22:07:30,936 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-02 22:07:30,937 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-02 22:07:30,937 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-02 22:07:30,937 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:30,937 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-02 22:07:30,937 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-02 22:07:30,937 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2021-11-02 22:07:30,938 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-02 22:07:30,938 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-02 22:07:30,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:30,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:31,033 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-02 22:07:31,033 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-02 22:07:31,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,043 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,113 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:31,114 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:31,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-02 22:07:31,141 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:31,141 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: [] [2021-11-02 22:07:31,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:31,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:31,234 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:31,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-02 22:07:31,269 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:31,269 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-02 22:07:31,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:31,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:31,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:31,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-02 22:07:31,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:31,398 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-02 22:07:31,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:31,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,434 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-02 22:07:31,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:31,444 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:31,453 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:31,453 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-02 22:07:31,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:31,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,478 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-02 22:07:31,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:31,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:31,489 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:31,489 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: [] [2021-11-02 22:07:31,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-11-02 22:07:31,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,514 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-02 22:07:31,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:31,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:31,526 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:31,526 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: [] [2021-11-02 22:07:31,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:31,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,550 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-02 22:07:31,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:31,552 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:31,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:31,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,589 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-02 22:07:31,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-02 22:07:31,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:31,644 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-02 22:07:31,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:31,651 INFO L210 LassoAnalysis]: Preferences: [2021-11-02 22:07:31,651 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-02 22:07:31,651 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-02 22:07:31,651 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-02 22:07:31,651 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-02 22:07:31,651 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,651 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-02 22:07:31,651 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-02 22:07:31,651 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2021-11-02 22:07:31,651 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-02 22:07:31,651 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-02 22:07:31,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:31,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:31,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:31,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:31,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:31,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:31,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:31,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:31,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:31,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:31,740 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-02 22:07:31,745 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-02 22:07:31,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,748 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-02 22:07:31,756 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 [2021-11-02 22:07:31,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:31,767 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:07:31,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:31,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:07:31,768 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:31,769 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:07:31,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:07:31,779 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:07:31,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:31,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,821 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-02 22:07:31,848 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 [2021-11-02 22:07:31,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:31,859 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:07:31,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:31,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:07:31,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:31,861 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:07:31,862 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:07:31,869 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:07:31,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:31,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,910 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,916 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 [2021-11-02 22:07:31,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:31,926 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:07:31,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:31,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:07:31,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:31,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:07:31,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:07:31,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-02 22:07:31,940 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:07:31,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:31,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:31,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:31,963 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:31,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-02 22:07:31,965 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 [2021-11-02 22:07:31,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:31,973 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:07:31,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:31,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:07:31,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:31,974 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:07:31,974 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:07:32,001 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:07:32,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:32,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:32,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:32,031 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:32,036 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 [2021-11-02 22:07:32,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-02 22:07:32,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:32,045 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:07:32,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:32,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:07:32,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:32,047 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:07:32,047 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:07:32,050 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:07:32,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:32,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:32,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:32,073 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:32,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-02 22:07:32,079 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 [2021-11-02 22:07:32,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:32,087 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:07:32,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:32,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:07:32,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:32,088 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:07:32,088 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:07:32,095 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:07:32,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:32,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:32,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:32,119 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:32,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-02 22:07:32,120 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 [2021-11-02 22:07:32,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:32,129 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:07:32,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:32,129 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:07:32,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:32,130 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:07:32,130 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:07:32,157 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:07:32,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-11-02 22:07:32,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:32,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:32,185 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:32,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-02 22:07:32,187 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 [2021-11-02 22:07:32,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:32,197 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:07:32,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:32,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:07:32,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:32,199 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:07:32,199 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:07:32,208 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:07:32,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:32,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:32,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:32,232 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:32,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-02 22:07:32,236 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 [2021-11-02 22:07:32,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:32,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:07:32,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:32,244 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:07:32,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:32,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:07:32,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:07:32,253 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:07:32,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-11-02 22:07:32,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:32,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:32,276 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:32,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-02 22:07:32,277 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 [2021-11-02 22:07:32,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:32,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:32,287 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-02 22:07:32,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:32,302 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-11-02 22:07:32,302 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-11-02 22:07:32,326 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-02 22:07:32,372 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2021-11-02 22:07:32,372 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. [2021-11-02 22:07:32,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:32,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:32,375 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:32,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-02 22:07:32,393 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-02 22:07:32,418 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-11-02 22:07:32,418 INFO L513 LassoAnalysis]: Proved termination. [2021-11-02 22:07:32,419 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [1*g_#in~x >= 0] [2021-11-02 22:07:32,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:32,465 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-11-02 22:07:32,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:32,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:07:32,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:32,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:07:32,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:32,710 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 [2021-11-02 22:07:32,717 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) [2021-11-02 22:07:32,866 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. [2021-11-02 22:07:32,866 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 [2021-11-02 22:07:32,868 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) [2021-11-02 22:07:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2021-11-02 22:07:32,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2021-11-02 22:07:32,872 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:07:32,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2021-11-02 22:07:32,872 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:07:32,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2021-11-02 22:07:32,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:07:32,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 42 transitions. [2021-11-02 22:07:32,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-02 22:07:32,894 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 25 transitions. [2021-11-02 22:07:32,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-11-02 22:07:32,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-11-02 22:07:32,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2021-11-02 22:07:32,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-02 22:07:32,899 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-02 22:07:32,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2021-11-02 22:07:32,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-11-02 22:07:32,932 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) [2021-11-02 22:07:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-02 22:07:32,935 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-02 22:07:32,935 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-02 22:07:32,935 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-02 22:07:32,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2021-11-02 22:07:32,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-02 22:07:32,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:32,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:32,940 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:32,941 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:32,941 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 [2021-11-02 22:07:32,941 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 [2021-11-02 22:07:32,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:32,942 INFO L85 PathProgramCache]: Analyzing trace with hash -54633169, now seen corresponding path program 1 times [2021-11-02 22:07:32,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:32,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679747155] [2021-11-02 22:07:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:32,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:32,962 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:32,969 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:32,970 INFO L85 PathProgramCache]: Analyzing trace with hash -243608724, now seen corresponding path program 1 times [2021-11-02 22:07:32,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:32,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895569995] [2021-11-02 22:07:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:32,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:32,978 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:32,986 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:32,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:32,987 INFO L85 PathProgramCache]: Analyzing trace with hash -791141734, now seen corresponding path program 1 times [2021-11-02 22:07:32,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:32,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38482171] [2021-11-02 22:07:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:32,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:33,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:33,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-02 22:07:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:33,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-02 22:07:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:07:33,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:33,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38482171] [2021-11-02 22:07:33,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38482171] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:33,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127657462] [2021-11-02 22:07:33,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:33,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:33,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:33,152 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:33,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-02 22:07:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:33,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:07:33,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:07:33,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127657462] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:33,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:33,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-02 22:07:33,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535124538] [2021-11-02 22:07:33,499 INFO L210 LassoAnalysis]: Preferences: [2021-11-02 22:07:33,500 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-02 22:07:33,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-02 22:07:33,500 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-02 22:07:33,500 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-02 22:07:33,500 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:33,500 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-02 22:07:33,500 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-02 22:07:33,501 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2021-11-02 22:07:33,501 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-02 22:07:33,501 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-02 22:07:33,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:33,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:33,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:33,553 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-02 22:07:33,553 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-02 22:07:33,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:33,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:33,557 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:33,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:33,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:33,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-02 22:07:33,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:33,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:33,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:33,634 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:33,638 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-02 22:07:33,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:33,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-02 22:07:35,872 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-02 22:07:35,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:35,876 INFO L210 LassoAnalysis]: Preferences: [2021-11-02 22:07:35,876 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-02 22:07:35,876 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-02 22:07:35,876 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-02 22:07:35,876 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-02 22:07:35,876 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:35,876 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-02 22:07:35,876 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-02 22:07:35,876 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2021-11-02 22:07:35,876 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-02 22:07:35,876 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-02 22:07:35,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:35,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:35,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:35,941 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-02 22:07:35,941 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-02 22:07:35,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:35,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:35,947 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:35,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-02 22:07:35,948 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 [2021-11-02 22:07:35,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:35,956 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:07:35,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:35,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:07:35,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:35,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:07:35,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:07:35,957 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:07:35,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:35,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:35,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:35,989 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:35,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-02 22:07:35,992 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 [2021-11-02 22:07:36,000 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:07:36,000 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:07:36,000 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:07:36,000 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:07:36,000 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:07:36,002 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:07:36,002 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:07:36,029 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-02 22:07:36,039 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-02 22:07:36,040 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-02 22:07:36,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:36,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:36,046 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:36,047 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-02 22:07:36,047 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-02 22:07:36,047 INFO L513 LassoAnalysis]: Proved termination. [2021-11-02 22:07:36,047 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#t~ret0) = -2*g_#t~ret0 + 1 Supporting invariants [] [2021-11-02 22:07:36,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-02 22:07:36,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:36,086 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-02 22:07:36,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:36,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:07:36,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:36,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:07:36,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:36,442 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 [2021-11-02 22:07:36,442 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) [2021-11-02 22:07:36,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:36,750 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. [2021-11-02 22:07:36,750 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 [2021-11-02 22:07:36,751 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) [2021-11-02 22:07:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 36 transitions. [2021-11-02 22:07:36,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 10 letters. Loop has 8 letters. [2021-11-02 22:07:36,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:07:36,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 18 letters. Loop has 8 letters. [2021-11-02 22:07:36,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:07:36,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 10 letters. Loop has 16 letters. [2021-11-02 22:07:36,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:07:36,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 120 transitions. [2021-11-02 22:07:36,762 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-11-02 22:07:36,766 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 58 states and 81 transitions. [2021-11-02 22:07:36,767 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-11-02 22:07:36,767 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-11-02 22:07:36,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 81 transitions. [2021-11-02 22:07:36,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-02 22:07:36,768 INFO L681 BuchiCegarLoop]: Abstraction has 58 states and 81 transitions. [2021-11-02 22:07:36,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 81 transitions. [2021-11-02 22:07:36,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2021-11-02 22:07:36,777 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) [2021-11-02 22:07:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-11-02 22:07:36,779 INFO L704 BuchiCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-11-02 22:07:36,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:36,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:07:36,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:07:36,784 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) [2021-11-02 22:07:36,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:36,855 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-11-02 22:07:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:07:36,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 44 transitions. [2021-11-02 22:07:36,857 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-11-02 22:07:36,859 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 30 states and 34 transitions. [2021-11-02 22:07:36,859 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-11-02 22:07:36,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-11-02 22:07:36,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 34 transitions. [2021-11-02 22:07:36,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-02 22:07:36,860 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-11-02 22:07:36,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 34 transitions. [2021-11-02 22:07:36,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-11-02 22:07:36,863 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) [2021-11-02 22:07:36,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-02 22:07:36,864 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-02 22:07:36,864 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-02 22:07:36,864 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-02 22:07:36,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 27 transitions. [2021-11-02 22:07:36,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-11-02 22:07:36,865 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:36,865 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:36,866 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:36,866 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-02 22:07:36,867 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 [2021-11-02 22:07:36,867 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 [2021-11-02 22:07:36,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:36,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2001409165, now seen corresponding path program 2 times [2021-11-02 22:07:36,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:36,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230936142] [2021-11-02 22:07:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:36,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:36,879 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:36,889 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:36,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:36,890 INFO L85 PathProgramCache]: Analyzing trace with hash 49976, now seen corresponding path program 2 times [2021-11-02 22:07:36,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:36,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268295621] [2021-11-02 22:07:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:36,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:36,896 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:36,905 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:36,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:36,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1244451628, now seen corresponding path program 3 times [2021-11-02 22:07:36,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:36,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361757220] [2021-11-02 22:07:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:36,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:37,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-02 22:07:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:07:37,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:37,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361757220] [2021-11-02 22:07:37,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361757220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:37,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408637658] [2021-11-02 22:07:37,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:07:37,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:37,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:37,086 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:37,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-02 22:07:37,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-02 22:07:37,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:37,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:07:37,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:07:37,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408637658] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:37,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:37,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-11-02 22:07:37,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636496868] [2021-11-02 22:07:37,341 INFO L210 LassoAnalysis]: Preferences: [2021-11-02 22:07:37,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-02 22:07:37,342 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-02 22:07:37,342 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-02 22:07:37,342 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-02 22:07:37,342 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:37,342 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-02 22:07:37,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-02 22:07:37,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration3_Loop [2021-11-02 22:07:37,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-02 22:07:37,343 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-02 22:07:37,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:37,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:37,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:37,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:07:37,402 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-02 22:07:37,402 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-02 22:07:37,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:37,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:37,406 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:37,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:37,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:37,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-02 22:07:37,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-11-02 22:07:37,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:37,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:37,476 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:37,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-02 22:07:37,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-02 22:07:37,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:38,366 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:38,366 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] [2021-11-02 22:07:38,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:38,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:38,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:38,393 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:38,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-02 22:07:38,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:38,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:38,405 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:38,405 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-02 22:07:38,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-11-02 22:07:38,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:38,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:38,427 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:38,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-02 22:07:38,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:38,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:38,439 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:38,439 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-02 22:07:38,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:38,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:38,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:38,462 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:38,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-02 22:07:38,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-02 22:07:38,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-02 22:07:38,473 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-02 22:07:38,473 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-02 22:07:38,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-11-02 22:07:38,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:38,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:07:38,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:07:38,496 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) [2021-11-02 22:07:38,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:38,644 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-02 22:07:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:07:38,644 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 28 transitions. [2021-11-02 22:07:38,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-11-02 22:07:38,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 28 transitions. [2021-11-02 22:07:38,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-11-02 22:07:38,647 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-11-02 22:07:38,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 28 transitions. [2021-11-02 22:07:38,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-02 22:07:38,647 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-02 22:07:38,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 28 transitions. [2021-11-02 22:07:38,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-11-02 22:07:38,649 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) [2021-11-02 22:07:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-02 22:07:38,650 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-02 22:07:38,650 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-02 22:07:38,651 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-02 22:07:38,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 22 transitions. [2021-11-02 22:07:38,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-11-02 22:07:38,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:38,652 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:38,652 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:38,652 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1] [2021-11-02 22:07:38,653 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 [2021-11-02 22:07:38,653 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 [2021-11-02 22:07:38,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:38,653 INFO L85 PathProgramCache]: Analyzing trace with hash -54633169, now seen corresponding path program 2 times [2021-11-02 22:07:38,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:38,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322809972] [2021-11-02 22:07:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:38,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:38,660 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:38,665 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:38,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1187216231, now seen corresponding path program 2 times [2021-11-02 22:07:38,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:38,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951420937] [2021-11-02 22:07:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:38,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:38,672 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:38,679 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:38,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:38,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1917105529, now seen corresponding path program 4 times [2021-11-02 22:07:38,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:38,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159243242] [2021-11-02 22:07:38,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:38,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:38,689 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:38,698 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:39,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 10:07:39 BoogieIcfgContainer [2021-11-02 22:07:39,051 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-02 22:07:39,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:07:39,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:07:39,052 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:07:39,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:07:29" (3/4) ... [2021-11-02 22:07:39,055 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-02 22:07:39,086 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:07:39,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:07:39,088 INFO L168 Benchmark]: Toolchain (without parser) took 9882.69 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 76.0 MB in the beginning and 103.7 MB in the end (delta: -27.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:07:39,089 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 113.2 MB. Free memory is still 92.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:07:39,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.47 ms. Allocated memory is still 113.2 MB. Free memory was 75.8 MB in the beginning and 89.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:07:39,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.18 ms. Allocated memory is still 113.2 MB. Free memory was 89.1 MB in the beginning and 88.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:07:39,090 INFO L168 Benchmark]: Boogie Preprocessor took 16.96 ms. Allocated memory is still 113.2 MB. Free memory was 88.0 MB in the beginning and 87.4 MB in the end (delta: 603.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:07:39,090 INFO L168 Benchmark]: RCFGBuilder took 290.28 ms. Allocated memory is still 113.2 MB. Free memory was 86.9 MB in the beginning and 79.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:07:39,091 INFO L168 Benchmark]: BuchiAutomizer took 9258.99 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 79.1 MB in the beginning and 105.8 MB in the end (delta: -26.7 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. [2021-11-02 22:07:39,091 INFO L168 Benchmark]: Witness Printer took 34.96 ms. Allocated memory is still 136.3 MB. Free memory was 105.8 MB in the beginning and 103.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:07:39,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 113.2 MB. Free memory is still 92.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 228.47 ms. Allocated memory is still 113.2 MB. Free memory was 75.8 MB in the beginning and 89.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.18 ms. Allocated memory is still 113.2 MB. Free memory was 89.1 MB in the beginning and 88.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.96 ms. Allocated memory is still 113.2 MB. Free memory was 88.0 MB in the beginning and 87.4 MB in the end (delta: 603.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 290.28 ms. Allocated memory is still 113.2 MB. Free memory was 86.9 MB in the beginning and 79.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9258.99 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 79.1 MB in the beginning and 105.8 MB in the end (delta: -26.7 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. * Witness Printer took 34.96 ms. Allocated memory is still 136.3 MB. Free memory was 105.8 MB in the beginning and 103.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 5 locations. One deterministic module has affine ranking function -2 * aux-g(x - 1)-aux + 1 and consists of 10 locations. 2 modules have a trivial ranking function, the largest among these consists of 10 locations. The remainder module has 21 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.1s and 4 iterations. TraceHistogramMax:4. Analysis of lassos took 7.6s. Construction of modules took 0.2s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 46 SDtfs, 60 SDslu, 98 SDs, 0 SdLazy, 228 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq194 hnf92 smp100 dnf139 smp100 tf104 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 143ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.9s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57664dc1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d1d7301=1, \result=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ac907a5=0, \old(x)=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36340223=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! [2021-11-02 22:07:39,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:39,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-02 22:07:39,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41426f8a-0ec1-40db-8bba-a66ab9285474/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)