./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/not-04-false.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/not-04-false.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G --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 aa575ce9b28874c7e111cc4546a8e507a4cef5dddac4327fabb28f6e6dafbcda --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:49:41,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:49:41,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:49:41,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:49:41,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:49:41,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:49:41,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:49:41,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:49:41,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:49:41,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:49:41,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:49:41,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:49:41,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:49:41,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:49:41,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:49:41,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:49:41,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:49:41,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:49:41,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:49:41,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:49:41,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:49:41,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:49:41,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:49:41,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:49:41,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:49:41,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:49:41,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:49:41,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:49:41,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:49:41,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:49:41,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:49:41,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:49:41,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:49:41,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:49:41,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:49:41,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:49:41,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:49:41,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:49:41,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:49:41,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:49:41,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:49:41,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-23 13:49:41,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:49:41,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:49:41,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:49:41,866 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:49:41,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:49:41,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:49:41,869 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:49:41,869 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-23 13:49:41,869 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-23 13:49:41,870 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-23 13:49:41,871 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-23 13:49:41,871 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-23 13:49:41,872 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-23 13:49:41,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:49:41,872 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:49:41,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:49:41,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:49:41,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-23 13:49:41,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-23 13:49:41,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-23 13:49:41,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:49:41,874 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-23 13:49:41,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:49:41,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-23 13:49:41,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:49:41,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:49:41,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:49:41,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:49:41,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:49:41,879 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-23 13:49:41,879 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_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa575ce9b28874c7e111cc4546a8e507a4cef5dddac4327fabb28f6e6dafbcda [2021-11-23 13:49:42,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:49:42,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:49:42,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:49:42,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:49:42,261 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:49:42,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/termination-bwb/not-04-false.c [2021-11-23 13:49:42,350 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/data/02490b340/82eb7e3fd11c4255b79c51b84ec9ec77/FLAG966256959 [2021-11-23 13:49:42,912 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:49:42,913 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/sv-benchmarks/c/termination-bwb/not-04-false.c [2021-11-23 13:49:42,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/data/02490b340/82eb7e3fd11c4255b79c51b84ec9ec77/FLAG966256959 [2021-11-23 13:49:43,282 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/data/02490b340/82eb7e3fd11c4255b79c51b84ec9ec77 [2021-11-23 13:49:43,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:49:43,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:49:43,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:49:43,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:49:43,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:49:43,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@623ae553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43, skipping insertion in model container [2021-11-23 13:49:43,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:49:43,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:49:43,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:49:43,528 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:49:43,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:49:43,575 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:49:43,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43 WrapperNode [2021-11-23 13:49:43,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:49:43,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:49:43,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:49:43,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:49:43,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,608 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-11-23 13:49:43,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:49:43,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:49:43,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:49:43,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:49:43,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:49:43,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:49:43,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:49:43,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:49:43,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43" (1/1) ... [2021-11-23 13:49:43,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:43,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:43,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:43,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-23 13:49:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:49:43,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:49:43,772 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:49:43,774 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:49:43,847 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:49:43,853 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:49:43,854 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:49:43,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:43 BoogieIcfgContainer [2021-11-23 13:49:43,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:49:43,857 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-23 13:49:43,857 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-23 13:49:43,860 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-23 13:49:43,861 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:49:43,861 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:49:43" (1/3) ... [2021-11-23 13:49:43,863 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@594a8cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:49:43, skipping insertion in model container [2021-11-23 13:49:43,863 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:49:43,863 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:43" (2/3) ... [2021-11-23 13:49:43,863 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@594a8cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:49:43, skipping insertion in model container [2021-11-23 13:49:43,863 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:49:43,864 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:43" (3/3) ... [2021-11-23 13:49:43,865 INFO L388 chiAutomizerObserver]: Analyzing ICFG not-04-false.c [2021-11-23 13:49:43,910 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-23 13:49:43,911 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-23 13:49:43,911 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-23 13:49:43,911 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-23 13:49:43,911 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-23 13:49:43,911 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-23 13:49:43,911 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-23 13:49:43,911 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-23 13:49:43,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:43,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-23 13:49:43,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:49:43,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:49:43,940 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 13:49:43,941 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-23 13:49:43,941 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-23 13:49:43,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:43,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-23 13:49:43,942 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:49:43,942 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:49:43,942 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 13:49:43,943 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-23 13:49:43,947 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~a~0#1, main_~x~0#1, main_~y~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~a~0#1 := 0; 7#L18-2true [2021-11-23 13:49:43,948 INFO L793 eck$LassoCheckResult]: Loop: 7#L18-2true assume !!(main_~x~0#1 < 0); 5#L18true assume !(main_~x~0#1 < 0 && main_~y~0#1 >= 0);main_~x~0#1 := main_~x~0#1 - 1; 7#L18-2true [2021-11-23 13:49:43,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:43,953 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-23 13:49:43,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:43,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66415635] [2021-11-23 13:49:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:43,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:49:44,040 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:49:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:49:44,058 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:49:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:44,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2021-11-23 13:49:44,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:44,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589522945] [2021-11-23 13:49:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:44,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:49:44,082 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:49:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:49:44,096 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:49:44,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:44,099 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2021-11-23 13:49:44,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:44,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404453259] [2021-11-23 13:49:44,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:44,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:49:44,120 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:49:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:49:44,134 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:49:44,269 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:49:44,283 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:49:44,283 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:49:44,283 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:49:44,283 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:49:44,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:44,284 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:49:44,284 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:49:44,284 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-04-false.c_Iteration1_Loop [2021-11-23 13:49:44,284 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:49:44,284 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:49:44,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:49:44,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:49:44,395 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:49:44,396 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:49:44,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:44,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:44,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:44,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:49:44,422 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:49:44,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-23 13:49:44,469 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:49:44,470 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-1} Honda state: {ULTIMATE.start_main_~y~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:49:44,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:44,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:44,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:44,534 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:44,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:49:44,541 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:49:44,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-23 13:49:44,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:44,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:44,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:44,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:44,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:49:44,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:49:44,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-23 13:49:44,648 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:49:44,648 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=-1} Honda state: {ULTIMATE.start_main_~x~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=-1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [6, 1, 9] Nus: [0, 1] [2021-11-23 13:49:44,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:44,698 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:49:44,699 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:49:44,699 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:49:44,699 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:49:44,699 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:49:44,699 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:44,699 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:49:44,699 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:49:44,699 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-04-false.c_Iteration1_Lasso [2021-11-23 13:49:44,700 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:49:44,700 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:49:44,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:49:44,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:49:44,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:49:44,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:49:44,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:49:44,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:49:44,801 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:49:44,801 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:49:44,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:44,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:44,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:44,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:49:44,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:49:44,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-23 13:49:44,852 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:49:44,852 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-1} Honda state: {ULTIMATE.start_main_~y~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:49:44,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:44,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:44,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:44,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:44,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:49:44,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:49:44,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-23 13:49:44,906 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:49:44,906 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:49:44,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-11-23 13:49:44,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:44,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:44,927 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:44,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-23 13:49:44,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:49:44,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:49:44,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:49:44,944 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:49:44,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:44,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:44,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:44,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:44,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-23 13:49:44,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:49:44,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:49:45,001 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:49:45,001 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:49:45,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-11-23 13:49:45,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:45,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:45,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:45,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-23 13:49:45,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:49:45,024 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:49:45,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:45,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:45,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:45,115 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:45,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-23 13:49:45,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:49:45,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:49:45,219 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:49:45,220 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=-1} Honda state: {ULTIMATE.start_main_~x~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=-1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [6, 1, 9] Nus: [0, 1] [2021-11-23 13:49:45,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:45,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:49:45,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:45,253 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:45,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-23 13:49:45,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:49:45,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:49:45,284 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:49:45,284 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~a~0#1=0} Honda state: {ULTIMATE.start_main_~a~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:49:45,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-11-23 13:49:45,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 01:49:45 BoogieIcfgContainer [2021-11-23 13:49:45,339 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-23 13:49:45,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:49:45,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:49:45,340 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:49:45,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:43" (3/4) ... [2021-11-23 13:49:45,343 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-23 13:49:45,374 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:49:45,375 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:49:45,376 INFO L158 Benchmark]: Toolchain (without parser) took 2087.88ms. Allocated memory was 81.8MB in the beginning and 111.1MB in the end (delta: 29.4MB). Free memory was 45.3MB in the beginning and 74.3MB in the end (delta: -29.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:49:45,377 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 37.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:49:45,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.03ms. Allocated memory was 81.8MB in the beginning and 111.1MB in the end (delta: 29.4MB). Free memory was 45.1MB in the beginning and 88.5MB in the end (delta: -43.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-23 13:49:45,378 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.85ms. Allocated memory is still 111.1MB. Free memory was 88.5MB in the beginning and 87.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:49:45,379 INFO L158 Benchmark]: Boogie Preprocessor took 23.06ms. Allocated memory is still 111.1MB. Free memory was 87.1MB in the beginning and 86.2MB in the end (delta: 893.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:49:45,380 INFO L158 Benchmark]: RCFGBuilder took 221.96ms. Allocated memory is still 111.1MB. Free memory was 86.2MB in the beginning and 78.4MB in the end (delta: 7.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:49:45,380 INFO L158 Benchmark]: BuchiAutomizer took 1482.69ms. Allocated memory is still 111.1MB. Free memory was 78.2MB in the beginning and 75.8MB in the end (delta: 2.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-23 13:49:45,381 INFO L158 Benchmark]: Witness Printer took 35.00ms. Allocated memory is still 111.1MB. Free memory was 75.8MB in the beginning and 74.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:49:45,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 37.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.03ms. Allocated memory was 81.8MB in the beginning and 111.1MB in the end (delta: 29.4MB). Free memory was 45.1MB in the beginning and 88.5MB in the end (delta: -43.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.85ms. Allocated memory is still 111.1MB. Free memory was 88.5MB in the beginning and 87.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.06ms. Allocated memory is still 111.1MB. Free memory was 87.1MB in the beginning and 86.2MB in the end (delta: 893.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 221.96ms. Allocated memory is still 111.1MB. Free memory was 86.2MB in the beginning and 78.4MB in the end (delta: 7.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 1482.69ms. Allocated memory is still 111.1MB. Free memory was 78.2MB in the beginning and 75.8MB in the end (delta: 2.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 35.00ms. Allocated memory is still 111.1MB. Free memory was 75.8MB in the beginning and 74.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {y=-1, x=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f97405d=0, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@591e95cc=0, \result=0} State at position 1 is {y=-1, x=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f97405d=0, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@591e95cc=0, \result=0} For i>1, the state at position i is {y=-1 + sum_{k=0}^i 0, x=-1 + sum_{k=0}^i -1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f97405d=0 + sum_{k=0}^i 0, a=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@591e95cc=0 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 1GEVs Lambdas: [6, 1, 9] Mus: [0, 1] - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int a, x, y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] a = 0 Loop: [L17] COND TRUE x<0 [L18] COND FALSE !(x < 0 && y>= 0) [L21] x = x-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 13:49:45,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40210280-88c8-4ce7-b70f-3c675edb8ae6/bin/uautomizer-wIGwrQj20G/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)