./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/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 32bit --witnessprinter.graph.data.programhash 1225f82562543767c482452e9133e4a69d5dae70 .................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-635dfa2 [2018-12-08 13:43:52,130 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 13:43:52,131 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 13:43:52,137 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 13:43:52,137 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 13:43:52,137 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 13:43:52,138 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 13:43:52,139 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 13:43:52,139 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 13:43:52,140 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 13:43:52,140 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 13:43:52,140 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 13:43:52,141 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 13:43:52,141 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 13:43:52,141 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 13:43:52,142 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 13:43:52,142 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 13:43:52,143 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 13:43:52,144 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 13:43:52,144 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 13:43:52,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 13:43:52,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 13:43:52,147 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 13:43:52,147 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 13:43:52,147 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 13:43:52,147 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 13:43:52,148 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 13:43:52,148 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 13:43:52,148 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 13:43:52,149 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 13:43:52,149 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 13:43:52,149 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 13:43:52,149 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 13:43:52,149 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 13:43:52,150 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 13:43:52,150 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 13:43:52,150 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-08 13:43:52,158 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 13:43:52,158 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 13:43:52,158 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 13:43:52,159 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 13:43:52,159 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 13:43:52,159 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 13:43:52,159 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 13:43:52,159 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 13:43:52,159 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 13:43:52,159 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 13:43:52,159 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 13:43:52,159 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 13:43:52,159 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 13:43:52,159 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 13:43:52,159 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 13:43:52,159 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 13:43:52,160 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 13:43:52,160 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 13:43:52,160 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 13:43:52,160 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 13:43:52,160 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 13:43:52,160 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 13:43:52,160 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 13:43:52,160 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 13:43:52,160 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 13:43:52,160 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 13:43:52,160 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 13:43:52,160 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 13:43:52,161 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 13:43:52,161 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 13:43:52,161 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 13:43:52,161 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 13:43:52,161 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_f541792c-627b-43ef-b646-58bb088e58e0/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1225f82562543767c482452e9133e4a69d5dae70 [2018-12-08 13:43:52,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 13:43:52,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 13:43:52,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 13:43:52,191 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 13:43:52,191 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 13:43:52,192 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i [2018-12-08 13:43:52,229 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/bin-2019/uautomizer/data/27299a66b/fa097f05940b41b592a58cbb88c2cf2a/FLAGfa11f270f [2018-12-08 13:43:52,669 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 13:43:52,670 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/sv-benchmarks/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i [2018-12-08 13:43:52,674 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/bin-2019/uautomizer/data/27299a66b/fa097f05940b41b592a58cbb88c2cf2a/FLAGfa11f270f [2018-12-08 13:43:52,684 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/bin-2019/uautomizer/data/27299a66b/fa097f05940b41b592a58cbb88c2cf2a [2018-12-08 13:43:52,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 13:43:52,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 13:43:52,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 13:43:52,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 13:43:52,690 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 13:43:52,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 01:43:52" (1/1) ... [2018-12-08 13:43:52,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770bfda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52, skipping insertion in model container [2018-12-08 13:43:52,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 01:43:52" (1/1) ... [2018-12-08 13:43:52,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 13:43:52,710 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 13:43:52,806 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 13:43:52,809 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 13:43:52,820 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 13:43:52,828 INFO L195 MainTranslator]: Completed translation [2018-12-08 13:43:52,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52 WrapperNode [2018-12-08 13:43:52,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 13:43:52,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 13:43:52,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 13:43:52,829 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 13:43:52,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52" (1/1) ... [2018-12-08 13:43:52,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52" (1/1) ... [2018-12-08 13:43:52,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 13:43:52,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 13:43:52,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 13:43:52,850 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 13:43:52,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52" (1/1) ... [2018-12-08 13:43:52,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52" (1/1) ... [2018-12-08 13:43:52,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52" (1/1) ... [2018-12-08 13:43:52,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52" (1/1) ... [2018-12-08 13:43:52,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52" (1/1) ... [2018-12-08 13:43:52,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52" (1/1) ... [2018-12-08 13:43:52,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52" (1/1) ... [2018-12-08 13:43:52,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 13:43:52,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 13:43:52,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 13:43:52,894 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 13:43:52,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/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 [2018-12-08 13:43:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 13:43:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 13:43:53,038 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 13:43:53,038 INFO L280 CfgBuilder]: Removed 35 assue(true) statements. [2018-12-08 13:43:53,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 01:43:53 BoogieIcfgContainer [2018-12-08 13:43:53,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 13:43:53,039 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 13:43:53,039 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 13:43:53,041 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 13:43:53,041 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 13:43:53,041 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 01:43:52" (1/3) ... [2018-12-08 13:43:53,042 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f7215a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 01:43:53, skipping insertion in model container [2018-12-08 13:43:53,042 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 13:43:53,042 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:52" (2/3) ... [2018-12-08 13:43:53,043 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f7215a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 01:43:53, skipping insertion in model container [2018-12-08 13:43:53,043 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 13:43:53,043 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 01:43:53" (3/3) ... [2018-12-08 13:43:53,044 INFO L375 chiAutomizerObserver]: Analyzing ICFG stateful_check_false-unreach-call_false-termination.i [2018-12-08 13:43:53,074 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 13:43:53,074 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 13:43:53,074 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 13:43:53,075 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 13:43:53,075 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 13:43:53,075 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 13:43:53,075 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 13:43:53,075 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 13:43:53,075 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 13:43:53,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2018-12-08 13:43:53,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2018-12-08 13:43:53,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 13:43:53,098 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 13:43:53,102 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 13:43:53,102 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 13:43:53,103 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 13:43:53,103 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2018-12-08 13:43:53,104 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2018-12-08 13:43:53,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 13:43:53,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 13:43:53,105 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 13:43:53,105 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 13:43:53,109 INFO L794 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRYtrue ~ldv_mutex~0 := 1;~open_called~0 := 0; 8#L-1true havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 27#L70true main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 10#L76-2true [2018-12-08 13:43:53,110 INFO L796 eck$LassoCheckResult]: Loop: 10#L76-2true assume !!(0 != main_#t~nondet2);havoc main_#t~nondet2;main_#t~switch4 := 0 == main_#t~nondet3; 3#L80true assume main_#t~switch4; 28#L81true assume !(0 == main_~ldv_s_misc_fops_file_operations~0); 21#L78true havoc main_#t~nondet3;havoc main_#t~switch4; 10#L76-2true [2018-12-08 13:43:53,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 13:43:53,113 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2018-12-08 13:43:53,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 13:43:53,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 13:43:53,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 13:43:53,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:53,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 13:43:53,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1327177, now seen corresponding path program 1 times [2018-12-08 13:43:53,170 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 13:43:53,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 13:43:53,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 13:43:53,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:53,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 13:43:53,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1804166377, now seen corresponding path program 1 times [2018-12-08 13:43:53,178 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 13:43:53,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 13:43:53,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 13:43:53,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 13:43:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 13:43:53,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 13:43:53,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 13:43:53,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 13:43:53,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 13:43:53,263 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2018-12-08 13:43:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 13:43:53,298 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2018-12-08 13:43:53,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 13:43:53,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 73 transitions. [2018-12-08 13:43:53,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2018-12-08 13:43:53,303 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 41 states and 57 transitions. [2018-12-08 13:43:53,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-12-08 13:43:53,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-12-08 13:43:53,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 57 transitions. [2018-12-08 13:43:53,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 13:43:53,305 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2018-12-08 13:43:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 57 transitions. [2018-12-08 13:43:53,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-08 13:43:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-08 13:43:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2018-12-08 13:43:53,323 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2018-12-08 13:43:53,323 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2018-12-08 13:43:53,323 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 13:43:53,323 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 57 transitions. [2018-12-08 13:43:53,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2018-12-08 13:43:53,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 13:43:53,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 13:43:53,324 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 13:43:53,324 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-12-08 13:43:53,324 INFO L794 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY ~ldv_mutex~0 := 1;~open_called~0 := 0; 120#L-1 havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 121#L70 main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 138#L76-2 [2018-12-08 13:43:53,324 INFO L796 eck$LassoCheckResult]: Loop: 138#L76-2 assume !!(0 != main_#t~nondet2);havoc main_#t~nondet2;main_#t~switch4 := 0 == main_#t~nondet3; 147#L80 assume !main_#t~switch4;main_#t~switch4 := main_#t~switch4 || 1 == main_#t~nondet3; 145#L88 assume main_#t~switch4; 146#L89 assume !(1 == main_~ldv_s_misc_fops_file_operations~0); 141#L78 havoc main_#t~nondet3;havoc main_#t~switch4; 138#L76-2 [2018-12-08 13:43:53,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 13:43:53,325 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2018-12-08 13:43:53,325 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 13:43:53,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 13:43:53,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 13:43:53,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:53,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 13:43:53,329 INFO L82 PathProgramCache]: Analyzing trace with hash 41592519, now seen corresponding path program 1 times [2018-12-08 13:43:53,330 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 13:43:53,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 13:43:53,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,330 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 13:43:53,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:53,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 13:43:53,335 INFO L82 PathProgramCache]: Analyzing trace with hash 95032871, now seen corresponding path program 1 times [2018-12-08 13:43:53,335 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 13:43:53,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 13:43:53,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 13:43:53,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:43:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:53,403 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2018-12-08 13:43:53,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 01:43:53 BoogieIcfgContainer [2018-12-08 13:43:53,409 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 13:43:53,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 13:43:53,409 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 13:43:53,410 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 13:43:53,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 01:43:53" (3/4) ... [2018-12-08 13:43:53,412 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-12-08 13:43:53,434 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f541792c-627b-43ef-b646-58bb088e58e0/bin-2019/uautomizer/witness.graphml [2018-12-08 13:43:53,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 13:43:53,435 INFO L168 Benchmark]: Toolchain (without parser) took 748.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 954.4 MB in the beginning and 1.0 GB in the end (delta: -77.9 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-12-08 13:43:53,436 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 13:43:53,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.82 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-12-08 13:43:53,436 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.57 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 13:43:53,436 INFO L168 Benchmark]: Boogie Preprocessor took 44.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-08 13:43:53,437 INFO L168 Benchmark]: RCFGBuilder took 144.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-12-08 13:43:53,437 INFO L168 Benchmark]: BuchiAutomizer took 370.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 11.5 GB. [2018-12-08 13:43:53,437 INFO L168 Benchmark]: Witness Printer took 24.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 13:43:53,439 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.82 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.57 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 144.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 370.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 11.5 GB. * Witness Printer took 24.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * 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 41 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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 41 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 46 SDtfs, 22 SDslu, 35 SDs, 0 SdLazy, 15 SolverSat, 5 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: 76]: Nontermination argument in form of an infinite program execution. [2018-12-08 13:43:53,442 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2018-12-08 13:43:53,443 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ee8376f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6afb2785=0, \result=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@630a23af=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@65cac567=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@588a2d3e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@68bbbf4e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79716433=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2db022b5=1, NULL=0, open_called=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@769a9e8d=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@530458bb=0, ldv_s_misc_fops_file_operations=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 76]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L69] open_called = 0 [L70] return 0; Loop: [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND FALSE !(ldv_s_misc_fops_file_operations==1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...