./Ultimate.py --spec ../../sv-benchmarks/c/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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/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_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/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 0.1.23-1dbac8b [2018-10-27 06:08:32,732 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:08:32,734 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:08:32,750 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:08:32,751 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:08:32,751 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:08:32,752 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:08:32,754 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:08:32,756 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:08:32,757 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:08:32,757 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:08:32,758 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:08:32,759 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:08:32,760 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:08:32,761 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:08:32,761 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:08:32,762 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:08:32,764 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:08:32,766 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:08:32,768 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:08:32,769 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:08:32,770 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:08:32,772 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:08:32,772 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:08:32,773 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:08:32,774 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:08:32,775 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:08:32,776 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:08:32,777 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:08:32,778 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:08:32,778 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:08:32,779 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:08:32,779 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:08:32,780 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:08:32,781 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:08:32,782 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:08:32,782 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-10-27 06:08:32,801 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:08:32,802 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:08:32,803 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:08:32,803 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:08:32,803 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:08:32,804 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:08:32,804 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:08:32,804 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:08:32,804 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:08:32,804 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:08:32,804 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:08:32,805 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:08:32,805 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 06:08:32,805 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:08:32,805 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:08:32,805 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 06:08:32,805 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:08:32,805 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:08:32,806 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:08:32,806 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:08:32,806 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 06:08:32,806 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:08:32,806 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:08:32,808 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:08:32,809 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:08:32,809 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:08:32,809 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:08:32,809 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:08:32,809 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:08:32,810 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:08:32,810 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:08:32,811 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_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/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 [2018-10-27 06:08:32,841 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:08:32,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:08:32,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:08:32,857 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:08:32,858 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:08:32,859 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i [2018-10-27 06:08:32,912 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/bin-2019/uautomizer/data/7f6ade953/e7332a93457b4b2e97dd8b5ddadf6925/FLAG12855558f [2018-10-27 06:08:33,330 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:08:33,331 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/sv-benchmarks/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i [2018-10-27 06:08:33,338 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/bin-2019/uautomizer/data/7f6ade953/e7332a93457b4b2e97dd8b5ddadf6925/FLAG12855558f [2018-10-27 06:08:33,353 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/bin-2019/uautomizer/data/7f6ade953/e7332a93457b4b2e97dd8b5ddadf6925 [2018-10-27 06:08:33,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:08:33,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:08:33,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:08:33,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:08:33,364 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:08:33,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:33" (1/1) ... [2018-10-27 06:08:33,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6f8be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33, skipping insertion in model container [2018-10-27 06:08:33,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:33" (1/1) ... [2018-10-27 06:08:33,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:08:33,409 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:08:33,590 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:08:33,593 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:08:33,613 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:08:33,629 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:08:33,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33 WrapperNode [2018-10-27 06:08:33,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:08:33,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:08:33,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:08:33,631 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:08:33,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33" (1/1) ... [2018-10-27 06:08:33,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33" (1/1) ... [2018-10-27 06:08:33,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:08:33,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:08:33,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:08:33,671 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:08:33,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33" (1/1) ... [2018-10-27 06:08:33,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33" (1/1) ... [2018-10-27 06:08:33,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33" (1/1) ... [2018-10-27 06:08:33,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33" (1/1) ... [2018-10-27 06:08:33,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33" (1/1) ... [2018-10-27 06:08:33,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33" (1/1) ... [2018-10-27 06:08:33,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33" (1/1) ... [2018-10-27 06:08:33,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:08:33,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:08:33,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:08:33,707 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:08:33,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/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 06:08:33,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:08:33,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:08:34,296 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:08:34,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:34 BoogieIcfgContainer [2018-10-27 06:08:34,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:08:34,297 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:08:34,297 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:08:34,300 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:08:34,301 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:34,302 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:08:33" (1/3) ... [2018-10-27 06:08:34,303 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@225abd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:08:34, skipping insertion in model container [2018-10-27 06:08:34,303 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:34,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:33" (2/3) ... [2018-10-27 06:08:34,303 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@225abd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:08:34, skipping insertion in model container [2018-10-27 06:08:34,303 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:34,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:34" (3/3) ... [2018-10-27 06:08:34,305 INFO L375 chiAutomizerObserver]: Analyzing ICFG stateful_check_false-unreach-call_false-termination.i [2018-10-27 06:08:34,354 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:08:34,355 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:08:34,355 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:08:34,355 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:08:34,355 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:08:34,355 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:08:34,356 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:08:34,356 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:08:34,356 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:08:34,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states. [2018-10-27 06:08:34,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 39 [2018-10-27 06:08:34,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:34,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:34,405 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:08:34,405 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:08:34,405 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:08:34,405 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states. [2018-10-27 06:08:34,408 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 39 [2018-10-27 06:08:34,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:34,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:34,409 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:08:34,410 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:08:34,417 INFO L793 eck$LassoCheckResult]: Stem: 24#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;~ldv_mutex~0 := 1;~open_called~0 := 0; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 20#L70true main_#t~ret1 := my_init_#res;assume { :end_inline_my_init } true;havoc main_#t~ret1; 48#L76-3true [2018-10-27 06:08:34,418 INFO L795 eck$LassoCheckResult]: Loop: 48#L76-3true assume true; 9#L76-1true assume !!(main_#t~nondet2 != 0);havoc main_#t~nondet2;main_#t~switch4 := main_#t~nondet3 == 0; 3#L80true assume main_#t~switch4; 21#L81true assume !(main_~ldv_s_misc_fops_file_operations~0 == 0); 42#L78true havoc main_#t~nondet3;havoc main_#t~switch4; 48#L76-3true [2018-10-27 06:08:34,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:34,424 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2018-10-27 06:08:34,426 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:34,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:34,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:34,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:34,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:34,531 INFO L82 PathProgramCache]: Analyzing trace with hash 36451766, now seen corresponding path program 1 times [2018-10-27 06:08:34,531 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:34,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:34,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:34,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:34,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:34,543 INFO L82 PathProgramCache]: Analyzing trace with hash 89892118, now seen corresponding path program 1 times [2018-10-27 06:08:34,543 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:34,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:34,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:34,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:34,589 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 06:08:34,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:08:34,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:08:34,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:08:34,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:08:34,723 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2018-10-27 06:08:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:08:34,879 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2018-10-27 06:08:34,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:08:34,882 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 80 transitions. [2018-10-27 06:08:34,885 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2018-10-27 06:08:34,891 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 46 states and 62 transitions. [2018-10-27 06:08:34,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2018-10-27 06:08:34,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2018-10-27 06:08:34,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2018-10-27 06:08:34,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:08:34,900 INFO L705 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2018-10-27 06:08:34,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2018-10-27 06:08:34,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-27 06:08:34,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-27 06:08:34,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2018-10-27 06:08:34,938 INFO L728 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2018-10-27 06:08:34,939 INFO L608 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2018-10-27 06:08:34,939 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:08:34,939 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 62 transitions. [2018-10-27 06:08:34,941 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2018-10-27 06:08:34,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:34,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:34,945 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:08:34,945 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-10-27 06:08:34,945 INFO L793 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;~ldv_mutex~0 := 1;~open_called~0 := 0; 138#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 139#L70 main_#t~ret1 := my_init_#res;assume { :end_inline_my_init } true;havoc main_#t~ret1; 152#L76-3 [2018-10-27 06:08:34,945 INFO L795 eck$LassoCheckResult]: Loop: 152#L76-3 assume true; 145#L76-1 assume !!(main_#t~nondet2 != 0);havoc main_#t~nondet2;main_#t~switch4 := main_#t~nondet3 == 0; 125#L80 assume !main_#t~switch4;main_#t~switch4 := main_#t~switch4 || main_#t~nondet3 == 1; 126#L88 assume main_#t~switch4; 155#L89 assume !(main_~ldv_s_misc_fops_file_operations~0 == 1); 151#L78 havoc main_#t~nondet3;havoc main_#t~switch4; 152#L76-3 [2018-10-27 06:08:34,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:34,946 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2018-10-27 06:08:34,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:34,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:34,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:34,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:34,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:34,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1130454569, now seen corresponding path program 1 times [2018-10-27 06:08:34,962 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:34,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:34,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,964 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:34,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:34,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:34,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1507861815, now seen corresponding path program 1 times [2018-10-27 06:08:34,981 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:34,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:34,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:34,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:35,158 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 14 [2018-10-27 06:08:35,259 WARN L1239 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 [2018-10-27 06:08:35,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:08:35 BoogieIcfgContainer [2018-10-27 06:08:35,269 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:08:35,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:08:35,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:08:35,270 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:08:35,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:34" (3/4) ... [2018-10-27 06:08:35,273 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-10-27 06:08:35,308 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_daeaf7c1-3ab6-4dc5-b7a7-26d29a794482/bin-2019/uautomizer/witness.graphml [2018-10-27 06:08:35,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:08:35,308 INFO L168 Benchmark]: Toolchain (without parser) took 1951.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -138.0 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:35,309 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:08:35,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.72 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:35,310 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.47 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:35,312 INFO L168 Benchmark]: Boogie Preprocessor took 35.90 ms. Allocated memory is still 1.0 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:08:35,312 INFO L168 Benchmark]: RCFGBuilder took 589.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -201.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:35,313 INFO L168 Benchmark]: BuchiAutomizer took 972.26 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: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:35,313 INFO L168 Benchmark]: Witness Printer took 38.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:08:35,317 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.72 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.6 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 39.47 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.90 ms. Allocated memory is still 1.0 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 589.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -201.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 972.26 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: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 11.5 GB. * Witness Printer took 38.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. 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 46 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.1s. 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 46 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 51 SDtfs, 23 SDslu, 40 SDs, 0 SdLazy, 15 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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. [2018-10-27 06:08:35,324 WARN L1239 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 [2018-10-27 06:08:35,325 WARN L1239 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@147a55de=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ea9310d=0, \result=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e9f39a3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@582d4116=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1db5164=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@54da339a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62cd58bb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47d4dcb1=1, NULL=0, open_called=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6de42f05=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@415996a6=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; [L75] CALL my_init() [L69] open_called = 0 [L70] RET return 0; [L75] my_init() 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...