./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/ldv-regression/stateful_check.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/ldv-regression/stateful_check.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.1.25-f470102 [2019-11-28 20:48:14,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:48:14,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:48:15,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:48:15,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:48:15,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:48:15,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:48:15,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:48:15,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:48:15,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:48:15,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:48:15,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:48:15,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:48:15,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:48:15,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:48:15,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:48:15,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:48:15,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:48:15,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:48:15,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:48:15,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:48:15,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:48:15,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:48:15,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:48:15,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:48:15,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:48:15,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:48:15,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:48:15,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:48:15,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:48:15,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:48:15,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:48:15,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:48:15,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:48:15,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:48:15,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:48:15,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:48:15,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:48:15,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:48:15,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:48:15,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:48:15,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 20:48:15,073 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:48:15,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:48:15,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:48:15,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:48:15,075 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:48:15,076 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:48:15,076 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:48:15,076 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:48:15,076 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:48:15,076 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:48:15,078 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:48:15,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:48:15,078 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:48:15,078 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:48:15,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:48:15,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:48:15,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:48:15,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:48:15,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:48:15,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:48:15,080 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:48:15,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:48:15,081 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:48:15,081 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:48:15,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:48:15,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:48:15,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:48:15,082 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:48:15,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:48:15,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:48:15,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:48:15,084 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:48:15,085 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:48:15,086 INFO L138 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2019-11-28 20:48:15,402 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:48:15,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:48:15,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:48:15,420 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:48:15,421 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:48:15,422 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/stateful_check.c [2019-11-28 20:48:15,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8e480af/2cd3cfd560f94c218da791c461d85d6d/FLAG3d10122aa [2019-11-28 20:48:15,915 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:48:15,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c [2019-11-28 20:48:15,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8e480af/2cd3cfd560f94c218da791c461d85d6d/FLAG3d10122aa [2019-11-28 20:48:16,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8e480af/2cd3cfd560f94c218da791c461d85d6d [2019-11-28 20:48:16,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:48:16,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:48:16,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:48:16,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:48:16,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:48:16,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:48:16" (1/1) ... [2019-11-28 20:48:16,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33519a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16, skipping insertion in model container [2019-11-28 20:48:16,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:48:16" (1/1) ... [2019-11-28 20:48:16,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:48:16,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:48:16,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:48:16,574 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:48:16,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:48:16,606 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:48:16,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16 WrapperNode [2019-11-28 20:48:16,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:48:16,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:48:16,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:48:16,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:48:16,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16" (1/1) ... [2019-11-28 20:48:16,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16" (1/1) ... [2019-11-28 20:48:16,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:48:16,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:48:16,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:48:16,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:48:16,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16" (1/1) ... [2019-11-28 20:48:16,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16" (1/1) ... [2019-11-28 20:48:16,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16" (1/1) ... [2019-11-28 20:48:16,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16" (1/1) ... [2019-11-28 20:48:16,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16" (1/1) ... [2019-11-28 20:48:16,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16" (1/1) ... [2019-11-28 20:48:16,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16" (1/1) ... [2019-11-28 20:48:16,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:48:16,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:48:16,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:48:16,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:48:16,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 20:48:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:48:16,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:48:17,117 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:48:17,117 INFO L287 CfgBuilder]: Removed 35 assume(true) statements. [2019-11-28 20:48:17,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:48:17 BoogieIcfgContainer [2019-11-28 20:48:17,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:48:17,119 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:48:17,120 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:48:17,124 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:48:17,124 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:48:17,125 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:48:16" (1/3) ... [2019-11-28 20:48:17,126 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@220c6bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:48:17, skipping insertion in model container [2019-11-28 20:48:17,126 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:48:17,126 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:16" (2/3) ... [2019-11-28 20:48:17,126 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@220c6bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:48:17, skipping insertion in model container [2019-11-28 20:48:17,127 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:48:17,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:48:17" (3/3) ... [2019-11-28 20:48:17,128 INFO L371 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2019-11-28 20:48:17,177 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:48:17,178 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:48:17,178 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:48:17,178 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:48:17,179 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:48:17,179 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:48:17,179 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:48:17,179 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:48:17,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2019-11-28 20:48:17,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2019-11-28 20:48:17,220 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:48:17,221 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:48:17,228 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:48:17,228 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 20:48:17,228 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:48:17,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2019-11-28 20:48:17,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2019-11-28 20:48:17,232 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:48:17,232 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:48:17,233 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:48:17,233 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 20:48:17,239 INFO L794 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRYtrue ~ldv_mutex~0 := 1;~open_called~0 := 0; 8#L-1true havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 27#L70true main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 10#L76-2true [2019-11-28 20:48:17,240 INFO L796 eck$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 [2019-11-28 20:48:17,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:48:17,246 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2019-11-28 20:48:17,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:48:17,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081787946] [2019-11-28 20:48:17,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:48:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:48:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:48:17,347 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:48:17,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:48:17,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1327177, now seen corresponding path program 1 times [2019-11-28 20:48:17,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:48:17,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407207227] [2019-11-28 20:48:17,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:48:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:48:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:48:17,364 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:48:17,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:48:17,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1804166377, now seen corresponding path program 1 times [2019-11-28 20:48:17,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:48:17,367 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002095804] [2019-11-28 20:48:17,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:48:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:48:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:48:17,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002095804] [2019-11-28 20:48:17,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:48:17,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:48:17,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299699942] [2019-11-28 20:48:17,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:48:17,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:48:17,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:48:17,521 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2019-11-28 20:48:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:48:17,583 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2019-11-28 20:48:17,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:48:17,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 73 transitions. [2019-11-28 20:48:17,590 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2019-11-28 20:48:17,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 41 states and 57 transitions. [2019-11-28 20:48:17,599 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-28 20:48:17,599 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-11-28 20:48:17,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 57 transitions. [2019-11-28 20:48:17,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:48:17,601 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-11-28 20:48:17,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 57 transitions. [2019-11-28 20:48:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-11-28 20:48:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-28 20:48:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2019-11-28 20:48:17,632 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-11-28 20:48:17,632 INFO L591 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-11-28 20:48:17,632 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:48:17,632 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 57 transitions. [2019-11-28 20:48:17,634 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2019-11-28 20:48:17,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:48:17,634 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:48:17,634 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:48:17,635 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-28 20:48:17,635 INFO L794 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY ~ldv_mutex~0 := 1;~open_called~0 := 0; 120#L-1 havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 121#L70 main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 138#L76-2 [2019-11-28 20:48:17,635 INFO L796 eck$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 [2019-11-28 20:48:17,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:48:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2019-11-28 20:48:17,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:48:17,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881055390] [2019-11-28 20:48:17,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:48:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:48:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:48:17,647 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:48:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:48:17,647 INFO L82 PathProgramCache]: Analyzing trace with hash 41592519, now seen corresponding path program 1 times [2019-11-28 20:48:17,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:48:17,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466350589] [2019-11-28 20:48:17,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:48:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:48:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:48:17,658 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:48:17,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:48:17,659 INFO L82 PathProgramCache]: Analyzing trace with hash 95032871, now seen corresponding path program 1 times [2019-11-28 20:48:17,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:48:17,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703656051] [2019-11-28 20:48:17,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:48:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:48:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:48:17,673 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:48:17,773 WARN L1295 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 [2019-11-28 20:48:17,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:48:17 BoogieIcfgContainer [2019-11-28 20:48:17,787 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:48:17,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:48:17,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:48:17,788 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:48:17,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:48:17" (3/4) ... [2019-11-28 20:48:17,791 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 20:48:17,832 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:48:17,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:48:17,835 INFO L168 Benchmark]: Toolchain (without parser) took 1500.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -107.1 MB). Peak memory consumption was 36.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:48:17,836 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:48:17,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.12 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:48:17,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:48:17,839 INFO L168 Benchmark]: Boogie Preprocessor took 45.95 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:48:17,840 INFO L168 Benchmark]: RCFGBuilder took 356.09 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:48:17,840 INFO L168 Benchmark]: BuchiAutomizer took 667.55 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:48:17,841 INFO L168 Benchmark]: Witness Printer took 45.37 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. [2019-11-28 20:48:17,845 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.12 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 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 108.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.95 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 356.09 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 667.55 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * Witness Printer took 45.37 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 41 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s 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 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. [2019-11-28 20:48:17,858 WARN L1295 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 [2019-11-28 20:48:17,859 WARN L1295 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@749185e6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@91367c3=0, \result=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b36083c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@40d98b1b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@487ed68=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@137040e5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39dda28d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60c2cbd8=1, NULL=0, open_called=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@141b83c9=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@4231364f=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...