./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1a_false-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1a_false-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/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 ce492abcc29ddbc9795671b095b6bfaf5bfc547b ............................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-10-27 06:11:37,101 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:11:37,103 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:11:37,113 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:11:37,114 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:11:37,115 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:11:37,116 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:11:37,118 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:11:37,119 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:11:37,120 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:11:37,121 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:11:37,129 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:11:37,130 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:11:37,131 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:11:37,131 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:11:37,132 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:11:37,133 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:11:37,134 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:11:37,136 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:11:37,140 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:11:37,141 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:11:37,144 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:11:37,148 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:11:37,152 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:11:37,152 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:11:37,153 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:11:37,154 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:11:37,155 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:11:37,156 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:11:37,156 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:11:37,157 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:11:37,161 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:11:37,163 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:11:37,163 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:11:37,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:11:37,164 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:11:37,165 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:11:37,184 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:11:37,189 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:11:37,191 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:11:37,197 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:11:37,197 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:11:37,198 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:11:37,198 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:11:37,198 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:11:37,198 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:11:37,198 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:11:37,198 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:11:37,199 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:11:37,199 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:11:37,199 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:11:37,199 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:11:37,199 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:11:37,199 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:11:37,199 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:11:37,200 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:11:37,200 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:11:37,200 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:11:37,200 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:11:37,200 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:11:37,200 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:11:37,201 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:11:37,201 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:11:37,201 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:11:37,205 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:11:37,206 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/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 -> ce492abcc29ddbc9795671b095b6bfaf5bfc547b [2018-10-27 06:11:37,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:11:37,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:11:37,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:11:37,255 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:11:37,255 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:11:37,256 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1a_false-termination_true-valid-memsafety.c [2018-10-27 06:11:37,308 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/uautomizer/data/6dc4f325f/0d9bcff4390843208f445a12f064a12e/FLAG111cf0ff9 [2018-10-27 06:11:37,688 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:11:37,688 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/sv-benchmarks/c/termination-crafted/NestedRecursion_1a_false-termination_true-valid-memsafety.c [2018-10-27 06:11:37,695 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/uautomizer/data/6dc4f325f/0d9bcff4390843208f445a12f064a12e/FLAG111cf0ff9 [2018-10-27 06:11:37,709 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/uautomizer/data/6dc4f325f/0d9bcff4390843208f445a12f064a12e [2018-10-27 06:11:37,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:11:37,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:11:37,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:11:37,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:11:37,718 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:11:37,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:37" (1/1) ... [2018-10-27 06:11:37,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10083dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37, skipping insertion in model container [2018-10-27 06:11:37,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:37" (1/1) ... [2018-10-27 06:11:37,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:11:37,748 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:11:37,876 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:11:37,879 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:11:37,891 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:11:37,902 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:11:37,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37 WrapperNode [2018-10-27 06:11:37,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:11:37,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:11:37,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:11:37,903 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:11:37,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37" (1/1) ... [2018-10-27 06:11:37,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37" (1/1) ... [2018-10-27 06:11:37,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:11:37,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:11:37,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:11:37,936 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:11:37,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37" (1/1) ... [2018-10-27 06:11:37,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37" (1/1) ... [2018-10-27 06:11:37,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37" (1/1) ... [2018-10-27 06:11:37,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37" (1/1) ... [2018-10-27 06:11:37,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37" (1/1) ... [2018-10-27 06:11:37,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37" (1/1) ... [2018-10-27 06:11:37,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37" (1/1) ... [2018-10-27 06:11:37,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:11:37,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:11:37,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:11:37,953 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:11:37,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/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 [2018-10-27 06:11:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2018-10-27 06:11:38,133 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2018-10-27 06:11:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2018-10-27 06:11:38,134 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2018-10-27 06:11:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:11:38,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:11:38,439 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:11:38,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:38 BoogieIcfgContainer [2018-10-27 06:11:38,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:11:38,440 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:11:38,440 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:11:38,445 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:11:38,446 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:38,446 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:11:37" (1/3) ... [2018-10-27 06:11:38,447 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5104770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:11:38, skipping insertion in model container [2018-10-27 06:11:38,448 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:38,448 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:37" (2/3) ... [2018-10-27 06:11:38,448 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5104770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:11:38, skipping insertion in model container [2018-10-27 06:11:38,448 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:38,448 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:38" (3/3) ... [2018-10-27 06:11:38,452 INFO L375 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_1a_false-termination_true-valid-memsafety.c [2018-10-27 06:11:38,546 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:11:38,547 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:11:38,547 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:11:38,547 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:11:38,547 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:11:38,548 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:11:38,548 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:11:38,548 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:11:38,548 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:11:38,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2018-10-27 06:11:38,611 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-10-27 06:11:38,611 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:38,611 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:38,621 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-10-27 06:11:38,622 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:38,622 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:11:38,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2018-10-27 06:11:38,625 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-10-27 06:11:38,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:38,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:38,625 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-10-27 06:11:38,626 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:38,634 INFO L793 eck$LassoCheckResult]: Stem: 17#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 15#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 3#L26true assume !!(main_~x~0 <= 2147483646); 6#L27true call main_#t~ret6 := rec2(main_~x~0);< 5#rec2ENTRYtrue [2018-10-27 06:11:38,635 INFO L795 eck$LassoCheckResult]: Loop: 5#rec2ENTRYtrue ~j := #in~j; 23#L18true assume !(~j <= 0); 21#L20true call #t~ret3 := rec1(~j + 1);< 7#rec1ENTRYtrue ~i := #in~i; 12#L12true assume ~i <= 0;#res := 0; 8#rec1FINALtrue assume true; 16#rec1EXITtrue >#39#return; 25#L20-1true call #t~ret4 := rec2(#t~ret3);< 5#rec2ENTRYtrue [2018-10-27 06:11:38,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:38,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1510579, now seen corresponding path program 1 times [2018-10-27 06:11:38,643 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:38,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:38,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:38,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:38,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:38,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:38,754 INFO L82 PathProgramCache]: Analyzing trace with hash -931063642, now seen corresponding path program 1 times [2018-10-27 06:11:38,754 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:38,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:38,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:38,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:38,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:38,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:11:38,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 06:11:38,928 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:11:38,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 06:11:38,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 06:11:38,948 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2018-10-27 06:11:39,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:11:39,094 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2018-10-27 06:11:39,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 06:11:39,099 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 36 transitions. [2018-10-27 06:11:39,103 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-10-27 06:11:39,110 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 18 states and 24 transitions. [2018-10-27 06:11:39,111 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-10-27 06:11:39,111 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2018-10-27 06:11:39,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2018-10-27 06:11:39,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:11:39,115 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-10-27 06:11:39,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2018-10-27 06:11:39,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-27 06:11:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-27 06:11:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2018-10-27 06:11:39,145 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-10-27 06:11:39,145 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-10-27 06:11:39,146 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:11:39,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2018-10-27 06:11:39,147 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-10-27 06:11:39,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:39,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:39,148 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-10-27 06:11:39,149 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:39,149 INFO L793 eck$LassoCheckResult]: Stem: 79#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 78#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 63#L26 assume !!(main_~x~0 <= 2147483646); 64#L27 call main_#t~ret6 := rec2(main_~x~0);< 65#rec2ENTRY [2018-10-27 06:11:39,149 INFO L795 eck$LassoCheckResult]: Loop: 65#rec2ENTRY ~j := #in~j; 67#L18 assume !(~j <= 0); 72#L20 call #t~ret3 := rec1(~j + 1);< 68#rec1ENTRY ~i := #in~i; 73#L12 assume !(~i <= 0); 69#L14 call #t~ret0 := rec1(~i - 2);< 68#rec1ENTRY ~i := #in~i; 73#L12 assume ~i <= 0;#res := 0; 74#rec1FINAL assume true; 75#rec1EXIT >#33#return; 70#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 68#rec1ENTRY ~i := #in~i; 73#L12 assume ~i <= 0;#res := 0; 74#rec1FINAL assume true; 75#rec1EXIT >#35#return; 71#L14-2 call #t~ret2 := rec1(#t~ret1);< 68#rec1ENTRY ~i := #in~i; 73#L12 assume ~i <= 0;#res := 0; 74#rec1FINAL assume true; 75#rec1EXIT >#37#return; 76#L14-3 #res := #t~ret2 + 1;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 77#rec1FINAL assume true; 80#rec1EXIT >#39#return; 66#L20-1 call #t~ret4 := rec2(#t~ret3);< 65#rec2ENTRY [2018-10-27 06:11:39,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:39,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1510579, now seen corresponding path program 2 times [2018-10-27 06:11:39,150 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:39,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:39,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:39,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:39,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:39,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:39,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1852060604, now seen corresponding path program 1 times [2018-10-27 06:11:39,159 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:39,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:39,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:39,160 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:11:39,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:39,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:39,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2035496338, now seen corresponding path program 1 times [2018-10-27 06:11:39,192 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:39,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:39,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:39,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:39,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:39,524 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 06:11:39,794 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-10-27 06:11:40,031 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-10-27 06:11:40,176 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 06:11:40,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:11:40 BoogieIcfgContainer [2018-10-27 06:11:40,379 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:11:40,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:11:40,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:11:40,380 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:11:40,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:38" (3/4) ... [2018-10-27 06:11:40,384 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-10-27 06:11:40,428 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c8996e2a-f1f0-47ee-b972-6e3314d02f05/bin-2019/uautomizer/witness.graphml [2018-10-27 06:11:40,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:11:40,430 INFO L168 Benchmark]: Toolchain (without parser) took 2715.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -112.9 MB). Peak memory consumption was 58.0 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:40,431 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:40,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.70 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:40,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.22 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:40,432 INFO L168 Benchmark]: Boogie Preprocessor took 16.60 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 938.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:40,433 INFO L168 Benchmark]: RCFGBuilder took 487.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 938.3 MB in the beginning and 1.2 GB in the end (delta: -216.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:40,434 INFO L168 Benchmark]: BuchiAutomizer took 1938.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 80.5 MB). Peak memory consumption was 80.5 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:40,434 INFO L168 Benchmark]: Witness Printer took 48.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:40,439 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 187.70 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.22 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.60 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 938.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 487.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 938.3 MB in the beginning and 1.2 GB in the end (delta: -216.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1938.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 80.5 MB). Peak memory consumption was 80.5 MB. Max. memory is 11.5 GB. * Witness Printer took 48.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 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 5 locations. The remainder module has 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 2 iterations. TraceHistogramMax:4. Analysis of lassos took 1.5s. 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 18 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 26 SDtfs, 7 SDslu, 56 SDs, 0 SdLazy, 31 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 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: 17]: 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 {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d4d3114=0, \old(j)=1, \result=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10b58f14=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46da3c0a=0, x=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cfba50e=0, j=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L24] int x = __VERIFIER_nondet_int(); [L26] COND FALSE !(!(x<=2147483646)) [L27] CALL rec2(x) Loop: [L18] COND FALSE !(j <= 0) [L20] CALL, EXPR rec1(j+1) [L12] COND FALSE !(i <= 0) [L14] CALL, EXPR rec1(i-2) [L12] COND TRUE i <= 0 [L13] RET return 0; [L14] EXPR rec1(i-2) [L14] CALL, EXPR rec1(rec1(i-2) - 1) [L12] COND TRUE i <= 0 [L13] RET return 0; [L14] EXPR rec1(rec1(i-2) - 1) [L14] CALL, EXPR rec1(rec1(rec1(i-2) - 1)) [L12] COND TRUE i <= 0 [L13] RET return 0; [L14] EXPR rec1(rec1(rec1(i-2) - 1)) [L14] RET return rec1(rec1(rec1(i-2) - 1)) + 1; [L20] EXPR rec1(j+1) [L20] CALL rec2(rec1(j+1)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...