./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 30f4e4ab 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 0.1.24-30f4e4a [2019-11-28 03:15:45,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 03:15:45,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 03:15:45,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 03:15:45,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 03:15:45,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 03:15:45,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 03:15:45,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 03:15:45,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 03:15:45,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 03:15:45,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 03:15:45,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 03:15:45,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 03:15:45,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 03:15:45,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 03:15:45,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 03:15:45,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 03:15:45,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 03:15:45,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 03:15:45,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 03:15:45,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 03:15:45,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 03:15:45,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 03:15:45,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 03:15:45,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 03:15:45,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 03:15:45,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 03:15:45,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 03:15:45,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 03:15:45,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 03:15:45,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 03:15:45,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 03:15:45,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 03:15:45,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 03:15:45,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 03:15:45,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 03:15:45,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 03:15:45,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 03:15:45,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 03:15:45,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 03:15:45,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 03:15:45,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 03:15:45,694 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 03:15:45,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 03:15:45,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 03:15:45,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 03:15:45,697 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 03:15:45,697 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 03:15:45,697 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 03:15:45,698 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 03:15:45,698 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 03:15:45,698 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 03:15:45,698 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 03:15:45,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 03:15:45,699 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 03:15:45,699 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 03:15:45,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 03:15:45,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 03:15:45,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 03:15:45,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 03:15:45,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 03:15:45,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 03:15:45,701 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 03:15:45,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 03:15:45,702 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 03:15:45,702 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 03:15:45,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 03:15:45,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 03:15:45,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 03:15:45,703 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 03:15:45,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 03:15:45,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 03:15:45,704 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 03:15:45,705 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 03:15:45,705 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 03:15:45,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 03:15:46,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 03:15:46,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 03:15:46,022 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 03:15:46,023 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 03:15:46,023 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/stateful_check.c [2019-11-28 03:15:46,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59ebbbd1/7e79198ecc314fa19a0ab1b372d42302/FLAGce828d23b [2019-11-28 03:15:46,544 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 03:15:46,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c [2019-11-28 03:15:46,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59ebbbd1/7e79198ecc314fa19a0ab1b372d42302/FLAGce828d23b [2019-11-28 03:15:46,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59ebbbd1/7e79198ecc314fa19a0ab1b372d42302 [2019-11-28 03:15:46,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 03:15:46,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 03:15:46,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 03:15:46,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 03:15:46,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 03:15:46,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:46" (1/1) ... [2019-11-28 03:15:46,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc4abe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:46, skipping insertion in model container [2019-11-28 03:15:46,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:46" (1/1) ... [2019-11-28 03:15:46,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 03:15:46,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 03:15:47,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:15:47,158 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 03:15:47,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:15:47,211 INFO L208 MainTranslator]: Completed translation [2019-11-28 03:15:47,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47 WrapperNode [2019-11-28 03:15:47,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 03:15:47,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 03:15:47,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 03:15:47,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 03:15:47,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47" (1/1) ... [2019-11-28 03:15:47,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47" (1/1) ... [2019-11-28 03:15:47,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 03:15:47,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 03:15:47,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 03:15:47,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 03:15:47,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47" (1/1) ... [2019-11-28 03:15:47,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47" (1/1) ... [2019-11-28 03:15:47,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47" (1/1) ... [2019-11-28 03:15:47,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47" (1/1) ... [2019-11-28 03:15:47,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47" (1/1) ... [2019-11-28 03:15:47,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47" (1/1) ... [2019-11-28 03:15:47,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47" (1/1) ... [2019-11-28 03:15:47,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 03:15:47,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 03:15:47,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 03:15:47,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 03:15:47,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47" (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 03:15:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 03:15:47,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 03:15:47,703 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 03:15:47,703 INFO L297 CfgBuilder]: Removed 35 assume(true) statements. [2019-11-28 03:15:47,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:47 BoogieIcfgContainer [2019-11-28 03:15:47,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 03:15:47,706 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 03:15:47,706 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 03:15:47,709 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 03:15:47,710 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:15:47,710 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:15:46" (1/3) ... [2019-11-28 03:15:47,711 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6087a400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:15:47, skipping insertion in model container [2019-11-28 03:15:47,712 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:15:47,712 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:47" (2/3) ... [2019-11-28 03:15:47,712 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6087a400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:15:47, skipping insertion in model container [2019-11-28 03:15:47,713 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:15:47,713 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:47" (3/3) ... [2019-11-28 03:15:47,715 INFO L371 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2019-11-28 03:15:47,762 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 03:15:47,762 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 03:15:47,762 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 03:15:47,762 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 03:15:47,763 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 03:15:47,763 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 03:15:47,763 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 03:15:47,763 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 03:15:47,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2019-11-28 03:15:47,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2019-11-28 03:15:47,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:15:47,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:15:47,817 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 03:15:47,817 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 03:15:47,818 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 03:15:47,818 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2019-11-28 03:15:47,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2019-11-28 03:15:47,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:15:47,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:15:47,822 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 03:15:47,822 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 03:15:47,829 INFO L794 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRYtrue ~ldv_mutex~0 := 1;~open_called~0 := 0; 8#L-1true havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 27#L70true main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 10#L76-2true [2019-11-28 03:15:47,829 INFO L796 eck$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 03:15:47,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:15:47,835 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2019-11-28 03:15:47,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:15:47,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133197608] [2019-11-28 03:15:47,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:15:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:15:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:15:47,935 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:15:47,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:15:47,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1327177, now seen corresponding path program 1 times [2019-11-28 03:15:47,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:15:47,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100590043] [2019-11-28 03:15:47,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:15:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:15:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:15:47,948 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:15:47,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:15:47,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1804166377, now seen corresponding path program 1 times [2019-11-28 03:15:47,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:15:47,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056902055] [2019-11-28 03:15:47,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:15:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:15:48,006 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 03:15:48,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056902055] [2019-11-28 03:15:48,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:15:48,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 03:15:48,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849642621] [2019-11-28 03:15:48,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:15:48,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 03:15:48,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 03:15:48,143 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2019-11-28 03:15:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:15:48,212 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2019-11-28 03:15:48,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 03:15:48,215 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 73 transitions. [2019-11-28 03:15:48,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2019-11-28 03:15:48,229 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 41 states and 57 transitions. [2019-11-28 03:15:48,231 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-28 03:15:48,231 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-11-28 03:15:48,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 57 transitions. [2019-11-28 03:15:48,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:15:48,233 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-11-28 03:15:48,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 57 transitions. [2019-11-28 03:15:48,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-11-28 03:15:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-28 03:15:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2019-11-28 03:15:48,266 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-11-28 03:15:48,267 INFO L591 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-11-28 03:15:48,267 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 03:15:48,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 57 transitions. [2019-11-28 03:15:48,269 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2019-11-28 03:15:48,269 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:15:48,269 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:15:48,270 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 03:15:48,270 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-28 03:15:48,270 INFO L794 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY ~ldv_mutex~0 := 1;~open_called~0 := 0; 120#L-1 havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 121#L70 main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 138#L76-2 [2019-11-28 03:15:48,271 INFO L796 eck$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 03:15:48,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:15:48,271 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2019-11-28 03:15:48,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:15:48,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487250820] [2019-11-28 03:15:48,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:15:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:15:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:15:48,281 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:15:48,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:15:48,282 INFO L82 PathProgramCache]: Analyzing trace with hash 41592519, now seen corresponding path program 1 times [2019-11-28 03:15:48,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:15:48,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970862033] [2019-11-28 03:15:48,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:15:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:15:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:15:48,299 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:15:48,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:15:48,301 INFO L82 PathProgramCache]: Analyzing trace with hash 95032871, now seen corresponding path program 1 times [2019-11-28 03:15:48,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:15:48,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254014977] [2019-11-28 03:15:48,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:15:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:15:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:15:48,322 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:15:48,415 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 03:15:48,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:15:48 BoogieIcfgContainer [2019-11-28 03:15:48,427 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 03:15:48,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 03:15:48,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 03:15:48,428 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 03:15:48,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:47" (3/4) ... [2019-11-28 03:15:48,433 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 03:15:48,487 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 03:15:48,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 03:15:48,490 INFO L168 Benchmark]: Toolchain (without parser) took 1558.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -103.5 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. [2019-11-28 03:15:48,490 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:15:48,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.54 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 03:15:48,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-28 03:15:48,492 INFO L168 Benchmark]: Boogie Preprocessor took 32.13 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 03:15:48,493 INFO L168 Benchmark]: RCFGBuilder took 366.12 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-28 03:15:48,494 INFO L168 Benchmark]: BuchiAutomizer took 721.63 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: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 11.5 GB. [2019-11-28 03:15:48,494 INFO L168 Benchmark]: Witness Printer took 59.75 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. [2019-11-28 03:15:48,498 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 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 282.54 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 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 91.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.13 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 366.12 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 721.63 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: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 11.5 GB. * Witness Printer took 59.75 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 41 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. 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 03:15:48,507 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 03:15:48,508 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@6fc11ece=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6bcf39b5=0, \result=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ab0e912=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@679ccd8c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1126e8a3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@79312b25=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7046=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@482e6386=1, NULL=0, open_called=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66b76013=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@49a13da8=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...