./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_3970dde3-6786-4d69-bacf-68129a50ad9d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/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_3970dde3-6786-4d69-bacf-68129a50ad9d/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/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 [2018-11-10 09:31:48,051 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 09:31:48,052 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 09:31:48,059 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 09:31:48,059 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 09:31:48,060 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 09:31:48,061 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 09:31:48,062 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 09:31:48,064 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 09:31:48,064 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 09:31:48,065 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 09:31:48,065 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 09:31:48,066 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 09:31:48,067 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 09:31:48,068 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 09:31:48,068 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 09:31:48,069 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 09:31:48,070 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 09:31:48,072 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 09:31:48,073 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 09:31:48,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 09:31:48,075 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 09:31:48,076 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 09:31:48,077 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 09:31:48,077 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 09:31:48,077 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 09:31:48,078 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 09:31:48,079 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 09:31:48,079 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 09:31:48,080 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 09:31:48,081 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 09:31:48,081 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 09:31:48,081 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 09:31:48,081 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 09:31:48,082 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 09:31:48,083 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 09:31:48,083 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-10 09:31:48,094 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 09:31:48,095 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 09:31:48,096 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 09:31:48,096 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 09:31:48,096 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 09:31:48,096 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 09:31:48,096 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 09:31:48,096 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 09:31:48,097 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 09:31:48,097 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 09:31:48,097 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 09:31:48,097 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 09:31:48,097 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 09:31:48,097 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 09:31:48,098 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 09:31:48,098 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 09:31:48,098 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 09:31:48,098 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 09:31:48,098 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 09:31:48,098 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 09:31:48,098 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 09:31:48,099 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 09:31:48,099 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 09:31:48,099 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 09:31:48,099 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 09:31:48,099 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 09:31:48,099 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 09:31:48,099 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 09:31:48,100 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 09:31:48,100 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 09:31:48,100 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 09:31:48,101 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_3970dde3-6786-4d69-bacf-68129a50ad9d/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 [2018-11-10 09:31:48,124 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 09:31:48,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 09:31:48,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 09:31:48,136 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 09:31:48,136 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 09:31:48,136 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i [2018-11-10 09:31:48,175 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/bin-2019/uautomizer/data/294b98b81/ef8edda98cd94732ab1c9074a2035cf4/FLAGc95621f94 [2018-11-10 09:31:48,580 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 09:31:48,580 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/sv-benchmarks/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i [2018-11-10 09:31:48,584 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/bin-2019/uautomizer/data/294b98b81/ef8edda98cd94732ab1c9074a2035cf4/FLAGc95621f94 [2018-11-10 09:31:48,593 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/bin-2019/uautomizer/data/294b98b81/ef8edda98cd94732ab1c9074a2035cf4 [2018-11-10 09:31:48,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 09:31:48,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 09:31:48,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 09:31:48,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 09:31:48,598 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 09:31:48,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:31:48" (1/1) ... [2018-11-10 09:31:48,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10835ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48, skipping insertion in model container [2018-11-10 09:31:48,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:31:48" (1/1) ... [2018-11-10 09:31:48,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 09:31:48,625 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 09:31:48,741 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:31:48,743 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 09:31:48,754 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:31:48,763 INFO L193 MainTranslator]: Completed translation [2018-11-10 09:31:48,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48 WrapperNode [2018-11-10 09:31:48,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 09:31:48,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 09:31:48,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 09:31:48,764 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 09:31:48,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48" (1/1) ... [2018-11-10 09:31:48,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48" (1/1) ... [2018-11-10 09:31:48,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 09:31:48,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 09:31:48,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 09:31:48,784 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 09:31:48,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48" (1/1) ... [2018-11-10 09:31:48,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48" (1/1) ... [2018-11-10 09:31:48,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48" (1/1) ... [2018-11-10 09:31:48,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48" (1/1) ... [2018-11-10 09:31:48,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48" (1/1) ... [2018-11-10 09:31:48,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48" (1/1) ... [2018-11-10 09:31:48,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48" (1/1) ... [2018-11-10 09:31:48,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 09:31:48,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 09:31:48,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 09:31:48,797 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 09:31:48,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/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 [2018-11-10 09:31:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 09:31:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 09:31:49,003 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 09:31:49,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:31:49 BoogieIcfgContainer [2018-11-10 09:31:49,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 09:31:49,004 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 09:31:49,004 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 09:31:49,006 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 09:31:49,006 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 09:31:49,007 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 09:31:48" (1/3) ... [2018-11-10 09:31:49,007 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4704c374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 09:31:49, skipping insertion in model container [2018-11-10 09:31:49,008 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 09:31:49,008 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:31:48" (2/3) ... [2018-11-10 09:31:49,008 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4704c374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 09:31:49, skipping insertion in model container [2018-11-10 09:31:49,008 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 09:31:49,008 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:31:49" (3/3) ... [2018-11-10 09:31:49,010 INFO L375 chiAutomizerObserver]: Analyzing ICFG stateful_check_false-unreach-call_false-termination.i [2018-11-10 09:31:49,043 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 09:31:49,044 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 09:31:49,044 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 09:31:49,044 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 09:31:49,044 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 09:31:49,044 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 09:31:49,044 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 09:31:49,044 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 09:31:49,044 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 09:31:49,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states. [2018-11-10 09:31:49,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 39 [2018-11-10 09:31:49,068 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 09:31:49,068 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 09:31:49,074 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 09:31:49,074 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 09:31:49,074 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 09:31:49,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states. [2018-11-10 09:31:49,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 39 [2018-11-10 09:31:49,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 09:31:49,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 09:31:49,076 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 09:31:49,077 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 09:31:49,082 INFO L793 eck$LassoCheckResult]: Stem: 24#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;~ldv_mutex~0 := 1;~open_called~0 := 0; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 20#L70true main_#t~ret1 := my_init_#res;assume { :end_inline_my_init } true;havoc main_#t~ret1; 48#L76-3true [2018-11-10 09:31:49,082 INFO L795 eck$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~switch4;havoc main_#t~nondet3; 48#L76-3true [2018-11-10 09:31:49,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:31:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2018-11-10 09:31:49,087 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:31:49,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:31:49,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:31:49,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:31:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:31:49,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:31:49,152 INFO L82 PathProgramCache]: Analyzing trace with hash 36451766, now seen corresponding path program 1 times [2018-11-10 09:31:49,152 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:31:49,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:31:49,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:31:49,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:31:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:31:49,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:31:49,162 INFO L82 PathProgramCache]: Analyzing trace with hash 89892118, now seen corresponding path program 1 times [2018-11-10 09:31:49,162 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:31:49,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:31:49,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:31:49,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:31:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:31:49,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:31:49,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 09:31:49,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 09:31:49,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 09:31:49,265 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2018-11-10 09:31:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:31:49,328 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2018-11-10 09:31:49,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 09:31:49,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 80 transitions. [2018-11-10 09:31:49,332 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2018-11-10 09:31:49,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 46 states and 62 transitions. [2018-11-10 09:31:49,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2018-11-10 09:31:49,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2018-11-10 09:31:49,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2018-11-10 09:31:49,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 09:31:49,339 INFO L705 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2018-11-10 09:31:49,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2018-11-10 09:31:49,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-11-10 09:31:49,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 09:31:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2018-11-10 09:31:49,360 INFO L728 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2018-11-10 09:31:49,360 INFO L608 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2018-11-10 09:31:49,360 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 09:31:49,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 62 transitions. [2018-11-10 09:31:49,361 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2018-11-10 09:31:49,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 09:31:49,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 09:31:49,362 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 09:31:49,362 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-10 09:31:49,362 INFO L793 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;~ldv_mutex~0 := 1;~open_called~0 := 0; 138#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 139#L70 main_#t~ret1 := my_init_#res;assume { :end_inline_my_init } true;havoc main_#t~ret1; 152#L76-3 [2018-11-10 09:31:49,362 INFO L795 eck$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~switch4;havoc main_#t~nondet3; 152#L76-3 [2018-11-10 09:31:49,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:31:49,363 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2018-11-10 09:31:49,363 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:31:49,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:31:49,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:31:49,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:31:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:31:49,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:31:49,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1130454569, now seen corresponding path program 1 times [2018-11-10 09:31:49,370 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:31:49,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:31:49,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,371 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 09:31:49,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:31:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:31:49,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:31:49,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1507861815, now seen corresponding path program 1 times [2018-11-10 09:31:49,377 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:31:49,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:31:49,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:31:49,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:31:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:31:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:31:49,503 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 [2018-11-10 09:31:49,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 09:31:49 BoogieIcfgContainer [2018-11-10 09:31:49,511 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 09:31:49,512 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 09:31:49,512 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 09:31:49,512 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 09:31:49,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:31:49" (3/4) ... [2018-11-10 09:31:49,515 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-10 09:31:49,541 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3970dde3-6786-4d69-bacf-68129a50ad9d/bin-2019/uautomizer/witness.graphml [2018-11-10 09:31:49,541 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 09:31:49,542 INFO L168 Benchmark]: Toolchain (without parser) took 946.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -120.1 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2018-11-10 09:31:49,543 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:31:49,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.06 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:31:49,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.16 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:31:49,544 INFO L168 Benchmark]: Boogie Preprocessor took 12.95 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:31:49,544 INFO L168 Benchmark]: RCFGBuilder took 206.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2018-11-10 09:31:49,544 INFO L168 Benchmark]: BuchiAutomizer took 507.77 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2018-11-10 09:31:49,545 INFO L168 Benchmark]: Witness Printer took 29.75 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. [2018-11-10 09:31:49,547 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 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.06 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 20.16 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.95 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 206.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 507.77 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * Witness Printer took 29.75 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 0.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. 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 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, 0.0s 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. [2018-11-10 09:31:49,552 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 [2018-11-10 09:31:49,553 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@c3aed13=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13fd8760=0, \result=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ee0c647=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@ff1e1f5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61c55e23=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6b09499f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3be8fd0b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c719245=1, NULL=0, open_called=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@565b3384=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7f4d8e4c=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...