./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC --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 75dd2ce3f6219a56f38a72471186bda1e7610d5c ...................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:20:50,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:20:50,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:20:50,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:20:50,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:20:50,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:20:50,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:20:50,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:20:50,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:20:50,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:20:50,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:20:50,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:20:50,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:20:50,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:20:50,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:20:50,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:20:50,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:20:50,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:20:50,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:20:50,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:20:50,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:20:50,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:20:50,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:20:50,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:20:50,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:20:50,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:20:50,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:20:50,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:20:50,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:20:50,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:20:50,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:20:50,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:20:50,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:20:50,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:20:50,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:20:50,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:20:50,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:20:50,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:20:50,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:20:50,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:20:50,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:20:50,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-11 00:20:50,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:20:50,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:20:50,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:20:50,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:20:50,329 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:20:50,330 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-11 00:20:50,330 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-11 00:20:50,330 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-11 00:20:50,330 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-11 00:20:50,331 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-11 00:20:50,331 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-11 00:20:50,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:20:50,331 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:20:50,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:20:50,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:20:50,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-11 00:20:50,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-11 00:20:50,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-11 00:20:50,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:20:50,333 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-11 00:20:50,333 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:20:50,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-11 00:20:50,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:20:50,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:20:50,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:20:50,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:20:50,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:20:50,336 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-11 00:20:50,336 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_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75dd2ce3f6219a56f38a72471186bda1e7610d5c [2021-10-11 00:20:50,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:20:50,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:20:50,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:20:50,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:20:50,640 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:20:50,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2021-10-11 00:20:50,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/data/c42c6164d/49716010dd984ce0b711ac0b2f7490d3/FLAGb693eec73 [2021-10-11 00:20:51,147 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:20:51,148 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2021-10-11 00:20:51,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/data/c42c6164d/49716010dd984ce0b711ac0b2f7490d3/FLAGb693eec73 [2021-10-11 00:20:51,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/data/c42c6164d/49716010dd984ce0b711ac0b2f7490d3 [2021-10-11 00:20:51,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:20:51,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:20:51,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:20:51,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:20:51,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:20:51,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:20:51" (1/1) ... [2021-10-11 00:20:51,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bba25bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51, skipping insertion in model container [2021-10-11 00:20:51,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:20:51" (1/1) ... [2021-10-11 00:20:51,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:20:51,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:20:51,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:20:51,751 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:20:51,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:20:51,776 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:20:51,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51 WrapperNode [2021-10-11 00:20:51,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:20:51,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:20:51,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:20:51,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:20:51,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51" (1/1) ... [2021-10-11 00:20:51,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51" (1/1) ... [2021-10-11 00:20:51,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:20:51,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:20:51,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:20:51,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:20:51,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51" (1/1) ... [2021-10-11 00:20:51,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51" (1/1) ... [2021-10-11 00:20:51,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51" (1/1) ... [2021-10-11 00:20:51,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51" (1/1) ... [2021-10-11 00:20:51,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51" (1/1) ... [2021-10-11 00:20:51,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51" (1/1) ... [2021-10-11 00:20:51,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51" (1/1) ... [2021-10-11 00:20:51,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:20:51,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:20:51,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:20:51,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:20:51,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:20:51,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:20:51,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:20:52,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:20:52,098 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:20:52,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:20:52 BoogieIcfgContainer [2021-10-11 00:20:52,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:20:52,101 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-11 00:20:52,102 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-11 00:20:52,106 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-11 00:20:52,107 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:20:52,108 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 11.10 12:20:51" (1/3) ... [2021-10-11 00:20:52,110 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65b5c01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:20:52, skipping insertion in model container [2021-10-11 00:20:52,110 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:20:52,110 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:51" (2/3) ... [2021-10-11 00:20:52,111 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65b5c01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:20:52, skipping insertion in model container [2021-10-11 00:20:52,111 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:20:52,111 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:20:52" (3/3) ... [2021-10-11 00:20:52,113 INFO L389 chiAutomizerObserver]: Analyzing ICFG ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2021-10-11 00:20:52,187 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-11 00:20:52,187 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-11 00:20:52,187 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-11 00:20:52,188 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:20:52,188 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:20:52,188 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-11 00:20:52,188 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:20:52,188 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-11 00:20:52,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2021-10-11 00:20:52,219 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:20:52,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:20:52,219 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:20:52,225 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-11 00:20:52,225 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:20:52,225 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-11 00:20:52,225 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2021-10-11 00:20:52,227 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:20:52,227 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:20:52,227 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:20:52,227 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-11 00:20:52,228 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:20:52,234 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~k~0, main_~i~0;havoc main_~k~0;havoc main_~i~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L18true assume !(main_~k~0 >= 0);main_~i~0 := -1; 6#L23-1true [2021-10-11 00:20:52,235 INFO L796 eck$LassoCheckResult]: Loop: 6#L23-1true assume !!(main_~i~0 >= 0);main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L23-1true [2021-10-11 00:20:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:52,240 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2021-10-11 00:20:52,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:52,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246383150] [2021-10-11 00:20:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:20:52,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:20:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:20:52,318 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:20:52,334 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:20:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:52,336 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2021-10-11 00:20:52,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:52,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173106131] [2021-10-11 00:20:52,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:20:52,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:20:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:20:52,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:20:52,347 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:20:52,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:52,349 INFO L82 PathProgramCache]: Analyzing trace with hash 30953, now seen corresponding path program 1 times [2021-10-11 00:20:52,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:52,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447727603] [2021-10-11 00:20:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:20:52,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447727603] [2021-10-11 00:20:52,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:20:52,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:20:52,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722323727] [2021-10-11 00:20:52,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:20:52,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:20:52,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:52,553 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2021-10-11 00:20:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:20:52,604 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-10-11 00:20:52,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:20:52,607 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2021-10-11 00:20:52,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:20:52,624 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 3 states and 3 transitions. [2021-10-11 00:20:52,625 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-10-11 00:20:52,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-10-11 00:20:52,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3 transitions. [2021-10-11 00:20:52,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:20:52,627 INFO L692 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2021-10-11 00:20:52,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 3 transitions. [2021-10-11 00:20:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2021-10-11 00:20:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-11 00:20:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2021-10-11 00:20:52,661 INFO L715 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2021-10-11 00:20:52,661 INFO L595 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2021-10-11 00:20:52,661 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-11 00:20:52,662 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states and 3 transitions. [2021-10-11 00:20:52,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:20:52,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:20:52,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:20:52,663 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-11 00:20:52,664 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:20:52,664 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~k~0, main_~i~0;havoc main_~k~0;havoc main_~i~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1; 27#L18 assume main_~k~0 >= 0; 28#L23-1 [2021-10-11 00:20:52,664 INFO L796 eck$LassoCheckResult]: Loop: 28#L23-1 assume !!(main_~i~0 >= 0);main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 28#L23-1 [2021-10-11 00:20:52,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:52,667 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-10-11 00:20:52,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:52,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330328743] [2021-10-11 00:20:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:20:52,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:20:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:20:52,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:20:52,697 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:20:52,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:52,701 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2021-10-11 00:20:52,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:52,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569355636] [2021-10-11 00:20:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:20:52,712 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:20:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:20:52,721 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:20:52,722 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:20:52,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:52,723 INFO L82 PathProgramCache]: Analyzing trace with hash 30891, now seen corresponding path program 1 times [2021-10-11 00:20:52,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:52,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441851704] [2021-10-11 00:20:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:20:52,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:20:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:20:52,745 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:20:52,746 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:20:52,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 11.10 12:20:52 BoogieIcfgContainer [2021-10-11 00:20:52,848 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-11 00:20:52,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:20:52,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:20:52,849 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:20:52,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:20:52" (3/4) ... [2021-10-11 00:20:52,852 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-11 00:20:52,878 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5062f22-e3d8-4b69-9624-0eedbde862d6/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:20:52,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:20:52,880 INFO L168 Benchmark]: Toolchain (without parser) took 1302.82 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 72.7 MB in the beginning and 80.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:52,880 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 94.4 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:20:52,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.70 ms. Allocated memory is still 94.4 MB. Free memory was 72.7 MB in the beginning and 64.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:52,882 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.29 ms. Allocated memory is still 94.4 MB. Free memory was 64.2 MB in the beginning and 63.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:52,882 INFO L168 Benchmark]: Boogie Preprocessor took 18.92 ms. Allocated memory is still 94.4 MB. Free memory was 63.0 MB in the beginning and 62.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:20:52,883 INFO L168 Benchmark]: RCFGBuilder took 270.24 ms. Allocated memory is still 94.4 MB. Free memory was 62.0 MB in the beginning and 53.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:52,884 INFO L168 Benchmark]: BuchiAutomizer took 746.53 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 53.5 MB in the beginning and 82.5 MB in the end (delta: -28.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:20:52,884 INFO L168 Benchmark]: Witness Printer took 29.46 ms. Allocated memory is still 113.2 MB. Free memory was 82.5 MB in the beginning and 80.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:52,888 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 94.4 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 200.70 ms. Allocated memory is still 94.4 MB. Free memory was 72.7 MB in the beginning and 64.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.29 ms. Allocated memory is still 94.4 MB. Free memory was 64.2 MB in the beginning and 63.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.92 ms. Allocated memory is still 94.4 MB. Free memory was 63.0 MB in the beginning and 62.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 270.24 ms. Allocated memory is still 94.4 MB. Free memory was 62.0 MB in the beginning and 53.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 746.53 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 53.5 MB in the beginning and 82.5 MB in the end (delta: -28.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 29.46 ms. Allocated memory is still 113.2 MB. Free memory was 82.5 MB in the beginning and 80.9 MB in the end (delta: 1.5 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 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 3 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 3 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 23]: 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@15076978=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53026beb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5018ba13=0, i=0, k=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int k, i; [L16] k = __VERIFIER_nondet_int() [L17] i = __VERIFIER_nondet_int() [L18] COND TRUE k >= 0 Loop: [L23] COND TRUE i >= 0 [L24] i = __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...