./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer --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-a4ecdab [2020-11-28 02:57:08,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:08,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:08,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:08,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:08,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:08,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:08,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:08,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:08,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:08,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:08,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:08,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:08,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:08,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:08,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:08,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:08,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:08,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:08,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:08,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:08,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:08,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:08,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:08,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:08,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:08,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:08,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:08,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:08,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:08,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:08,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:08,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:08,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:08,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:08,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:08,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:08,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:08,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:08,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:08,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:08,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 02:57:08,540 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:08,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:08,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:08,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:08,548 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:08,548 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:57:08,549 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:57:08,549 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:57:08,549 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:57:08,549 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:57:08,550 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:57:08,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:08,551 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:57:08,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:08,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:08,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:57:08,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:57:08,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:57:08,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:08,553 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:57:08,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:08,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:57:08,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:08,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:08,554 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:57:08,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:08,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:08,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:08,555 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:57:08,557 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:57:08,558 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-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75dd2ce3f6219a56f38a72471186bda1e7610d5c [2020-11-28 02:57:08,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:08,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:08,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:08,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:08,904 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:08,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2020-11-28 02:57:08,996 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/data/95082c218/28d15b516274459d851be766519aefd9/FLAG08568a65c [2020-11-28 02:57:09,529 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:09,530 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2020-11-28 02:57:09,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/data/95082c218/28d15b516274459d851be766519aefd9/FLAG08568a65c [2020-11-28 02:57:09,949 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/data/95082c218/28d15b516274459d851be766519aefd9 [2020-11-28 02:57:09,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:09,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:09,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:09,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:09,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:09,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456093e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09, skipping insertion in model container [2020-11-28 02:57:09,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:09,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:10,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:10,254 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:10,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:10,318 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:10,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10 WrapperNode [2020-11-28 02:57:10,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:10,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:10,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:10,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:10,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2020-11-28 02:57:10,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2020-11-28 02:57:10,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:10,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:10,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:10,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:10,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2020-11-28 02:57:10,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2020-11-28 02:57:10,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2020-11-28 02:57:10,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2020-11-28 02:57:10,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2020-11-28 02:57:10,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2020-11-28 02:57:10,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2020-11-28 02:57:10,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:10,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:10,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:10,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:10,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/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 [2020-11-28 02:57:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:10,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:10,657 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:10,658 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 02:57:10,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:10 BoogieIcfgContainer [2020-11-28 02:57:10,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:10,661 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:57:10,661 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:57:10,669 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:57:10,670 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:10,671 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:09" (1/3) ... [2020-11-28 02:57:10,672 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@704755cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:10, skipping insertion in model container [2020-11-28 02:57:10,672 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:10,673 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (2/3) ... [2020-11-28 02:57:10,673 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@704755cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:10, skipping insertion in model container [2020-11-28 02:57:10,673 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:10,673 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:10" (3/3) ... [2020-11-28 02:57:10,675 INFO L373 chiAutomizerObserver]: Analyzing ICFG ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2020-11-28 02:57:10,749 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:57:10,749 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:57:10,749 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:57:10,749 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:10,749 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:10,750 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:57:10,750 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:10,750 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:57:10,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-28 02:57:10,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:57:10,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:10,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:10,795 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 02:57:10,795 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:57:10,795 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:57:10,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-28 02:57:10,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:57:10,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:10,797 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:10,797 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 02:57:10,797 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:57:10,805 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 [2020-11-28 02:57:10,806 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 [2020-11-28 02:57:10,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:10,813 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2020-11-28 02:57:10,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:10,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820788647] [2020-11-28 02:57:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:10,923 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:10,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:10,962 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:10,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:10,967 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2020-11-28 02:57:10,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:10,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004926740] [2020-11-28 02:57:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:10,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:10,994 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:10,996 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:10,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:10,998 INFO L82 PathProgramCache]: Analyzing trace with hash 30953, now seen corresponding path program 1 times [2020-11-28 02:57:10,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:10,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478266555] [2020-11-28 02:57:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:11,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478266555] [2020-11-28 02:57:11,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:11,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:11,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631998659] [2020-11-28 02:57:11,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:11,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:11,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:11,285 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-11-28 02:57:11,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:11,331 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2020-11-28 02:57:11,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:11,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2020-11-28 02:57:11,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:57:11,340 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 3 states and 3 transitions. [2020-11-28 02:57:11,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-28 02:57:11,343 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-28 02:57:11,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3 transitions. [2020-11-28 02:57:11,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:57:11,344 INFO L691 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-11-28 02:57:11,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 3 transitions. [2020-11-28 02:57:11,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2020-11-28 02:57:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 02:57:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2020-11-28 02:57:11,374 INFO L714 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-11-28 02:57:11,374 INFO L594 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-11-28 02:57:11,374 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:57:11,374 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states and 3 transitions. [2020-11-28 02:57:11,375 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:57:11,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:11,376 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:11,376 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 02:57:11,376 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:57:11,377 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 [2020-11-28 02:57:11,377 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 [2020-11-28 02:57:11,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:11,379 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-11-28 02:57:11,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:11,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37719292] [2020-11-28 02:57:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:11,390 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:11,398 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:11,402 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:11,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:11,403 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2020-11-28 02:57:11,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:11,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605481241] [2020-11-28 02:57:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:11,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:11,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:11,425 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:11,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:11,427 INFO L82 PathProgramCache]: Analyzing trace with hash 30891, now seen corresponding path program 1 times [2020-11-28 02:57:11,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:11,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628728168] [2020-11-28 02:57:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:11,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:11,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:11,449 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:11,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:11 BoogieIcfgContainer [2020-11-28 02:57:11,568 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:57:11,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:11,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:11,578 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:11,579 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:10" (3/4) ... [2020-11-28 02:57:11,582 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-28 02:57:11,634 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5c824af7-6126-4ffa-a7e5-8b96d7df4f88/bin/uautomizer/witness.graphml [2020-11-28 02:57:11,636 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:11,640 INFO L168 Benchmark]: Toolchain (without parser) took 1678.62 ms. Allocated memory is still 96.5 MB. Free memory was 65.1 MB in the beginning and 35.6 MB in the end (delta: 29.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:11,641 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 34.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:11,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.99 ms. Allocated memory is still 96.5 MB. Free memory was 64.9 MB in the beginning and 75.4 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:11,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.22 ms. Allocated memory is still 96.5 MB. Free memory was 75.4 MB in the beginning and 74.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:11,644 INFO L168 Benchmark]: Boogie Preprocessor took 23.91 ms. Allocated memory is still 96.5 MB. Free memory was 74.2 MB in the beginning and 73.3 MB in the end (delta: 936.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:11,648 INFO L168 Benchmark]: RCFGBuilder took 269.78 ms. Allocated memory is still 96.5 MB. Free memory was 73.3 MB in the beginning and 65.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:11,649 INFO L168 Benchmark]: BuchiAutomizer took 907.12 ms. Allocated memory is still 96.5 MB. Free memory was 65.4 MB in the beginning and 37.0 MB in the end (delta: 28.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:11,653 INFO L168 Benchmark]: Witness Printer took 65.65 ms. Allocated memory is still 96.5 MB. Free memory was 37.0 MB in the beginning and 35.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:11,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 34.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.99 ms. Allocated memory is still 96.5 MB. Free memory was 64.9 MB in the beginning and 75.4 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.22 ms. Allocated memory is still 96.5 MB. Free memory was 75.4 MB in the beginning and 74.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.91 ms. Allocated memory is still 96.5 MB. Free memory was 74.2 MB in the beginning and 73.3 MB in the end (delta: 936.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 269.78 ms. Allocated memory is still 96.5 MB. Free memory was 73.3 MB in the beginning and 65.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 907.12 ms. Allocated memory is still 96.5 MB. Free memory was 65.4 MB in the beginning and 37.0 MB in the end (delta: 28.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 65.65 ms. Allocated memory is still 96.5 MB. Free memory was 37.0 MB in the beginning and 35.6 MB in the end (delta: 1.4 MB). There was no memory consumed. 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 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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@40af4a5c=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@25d28a04=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72ec0eae=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...