./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: 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 /storage/repos/svcomp/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i -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 0.1.24-91b1670 [2018-11-28 23:40:29,217 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:40:29,218 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:40:29,232 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:40:29,233 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:40:29,234 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:40:29,235 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:40:29,238 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:40:29,240 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:40:29,240 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:40:29,242 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:40:29,242 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:40:29,243 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:40:29,244 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:40:29,246 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:40:29,247 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:40:29,248 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:40:29,250 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:40:29,252 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:40:29,254 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:40:29,255 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:40:29,257 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:40:29,260 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:40:29,260 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:40:29,260 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:40:29,261 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:40:29,263 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:40:29,264 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:40:29,265 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:40:29,266 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:40:29,266 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:40:29,267 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:40:29,267 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:40:29,268 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:40:29,269 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:40:29,270 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:40:29,271 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 23:40:29,302 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:40:29,303 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:40:29,305 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:40:29,306 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:40:29,307 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:40:29,307 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:40:29,307 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:40:29,307 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:40:29,307 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:40:29,307 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:40:29,308 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:40:29,308 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:40:29,308 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 23:40:29,308 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:40:29,308 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:40:29,308 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 23:40:29,311 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:40:29,311 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:40:29,311 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:40:29,311 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:40:29,312 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 23:40:29,312 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:40:29,312 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:40:29,312 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:40:29,312 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:40:29,313 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:40:29,313 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:40:29,313 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:40:29,313 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:40:29,313 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:40:29,313 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:40:29,317 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:40:29,318 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 -> /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 [2018-11-28 23:40:29,370 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:40:29,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:40:29,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:40:29,389 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:40:29,389 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:40:29,390 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i [2018-11-28 23:40:29,459 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e629d38e0/e5f4404efbba41df826e32c429972f1a/FLAG813fa2526 [2018-11-28 23:40:29,942 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:40:29,942 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/stateful_check_false-unreach-call_false-termination.i [2018-11-28 23:40:29,950 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e629d38e0/e5f4404efbba41df826e32c429972f1a/FLAG813fa2526 [2018-11-28 23:40:30,279 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e629d38e0/e5f4404efbba41df826e32c429972f1a [2018-11-28 23:40:30,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:40:30,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:40:30,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:40:30,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:40:30,294 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:40:30,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:40:30" (1/1) ... [2018-11-28 23:40:30,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afc2783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30, skipping insertion in model container [2018-11-28 23:40:30,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:40:30" (1/1) ... [2018-11-28 23:40:30,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:40:30,339 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:40:30,594 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:40:30,602 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:40:30,631 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:40:30,654 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:40:30,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30 WrapperNode [2018-11-28 23:40:30,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:40:30,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:40:30,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:40:30,656 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:40:30,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30" (1/1) ... [2018-11-28 23:40:30,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30" (1/1) ... [2018-11-28 23:40:30,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:40:30,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:40:30,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:40:30,707 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:40:30,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30" (1/1) ... [2018-11-28 23:40:30,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30" (1/1) ... [2018-11-28 23:40:30,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30" (1/1) ... [2018-11-28 23:40:30,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30" (1/1) ... [2018-11-28 23:40:30,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30" (1/1) ... [2018-11-28 23:40:30,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30" (1/1) ... [2018-11-28 23:40:30,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30" (1/1) ... [2018-11-28 23:40:30,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:40:30,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:40:30,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:40:30,755 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:40:30,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30" (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 [2018-11-28 23:40:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:40:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:40:31,404 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:40:31,404 INFO L280 CfgBuilder]: Removed 35 assue(true) statements. [2018-11-28 23:40:31,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:40:31 BoogieIcfgContainer [2018-11-28 23:40:31,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:40:31,405 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:40:31,406 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:40:31,410 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:40:31,411 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:40:31,411 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:40:30" (1/3) ... [2018-11-28 23:40:31,412 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c36f99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:40:31, skipping insertion in model container [2018-11-28 23:40:31,412 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:40:31,412 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:30" (2/3) ... [2018-11-28 23:40:31,413 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c36f99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:40:31, skipping insertion in model container [2018-11-28 23:40:31,413 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:40:31,413 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:40:31" (3/3) ... [2018-11-28 23:40:31,417 INFO L375 chiAutomizerObserver]: Analyzing ICFG stateful_check_false-unreach-call_false-termination.i [2018-11-28 23:40:31,484 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:40:31,485 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:40:31,485 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:40:31,485 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:40:31,485 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:40:31,485 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:40:31,486 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:40:31,486 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:40:31,486 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:40:31,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2018-11-28 23:40:31,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2018-11-28 23:40:31,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:40:31,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:40:31,535 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:40:31,535 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:40:31,535 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:40:31,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2018-11-28 23:40:31,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2018-11-28 23:40:31,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:40:31,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:40:31,540 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:40:31,540 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:40:31,547 INFO L794 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRYtrue ~ldv_mutex~0 := 1;~open_called~0 := 0; 8#L-1true havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 27#L70true main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 10#L76-2true [2018-11-28 23:40:31,547 INFO L796 eck$LassoCheckResult]: Loop: 10#L76-2true assume !!(0 != main_#t~nondet2);havoc main_#t~nondet2;main_#t~switch4 := 0 == main_#t~nondet3; 3#L80true assume main_#t~switch4; 28#L81true assume !(0 == main_~ldv_s_misc_fops_file_operations~0); 21#L78true havoc main_#t~nondet3;havoc main_#t~switch4; 10#L76-2true [2018-11-28 23:40:31,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:40:31,554 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2018-11-28 23:40:31,556 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:40:31,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:40:31,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:31,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:40:31,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:31,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:40:31,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1327177, now seen corresponding path program 1 times [2018-11-28 23:40:31,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:40:31,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:40:31,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:31,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:40:31,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:31,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:40:31,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1804166377, now seen corresponding path program 1 times [2018-11-28 23:40:31,678 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:40:31,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:40:31,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:31,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:40:31,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:40:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:40:31,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:40:31,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:40:31,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:40:31,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:40:31,906 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2018-11-28 23:40:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:40:32,080 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2018-11-28 23:40:32,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:40:32,085 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 73 transitions. [2018-11-28 23:40:32,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2018-11-28 23:40:32,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 41 states and 57 transitions. [2018-11-28 23:40:32,106 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-28 23:40:32,107 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-11-28 23:40:32,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 57 transitions. [2018-11-28 23:40:32,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:40:32,109 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2018-11-28 23:40:32,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 57 transitions. [2018-11-28 23:40:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 23:40:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 23:40:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2018-11-28 23:40:32,163 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2018-11-28 23:40:32,163 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2018-11-28 23:40:32,163 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:40:32,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 57 transitions. [2018-11-28 23:40:32,166 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2018-11-28 23:40:32,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:40:32,169 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:40:32,170 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:40:32,170 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-28 23:40:32,171 INFO L794 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY ~ldv_mutex~0 := 1;~open_called~0 := 0; 120#L-1 havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 121#L70 main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 138#L76-2 [2018-11-28 23:40:32,171 INFO L796 eck$LassoCheckResult]: Loop: 138#L76-2 assume !!(0 != main_#t~nondet2);havoc main_#t~nondet2;main_#t~switch4 := 0 == main_#t~nondet3; 147#L80 assume !main_#t~switch4;main_#t~switch4 := main_#t~switch4 || 1 == main_#t~nondet3; 145#L88 assume main_#t~switch4; 146#L89 assume !(1 == main_~ldv_s_misc_fops_file_operations~0); 141#L78 havoc main_#t~nondet3;havoc main_#t~switch4; 138#L76-2 [2018-11-28 23:40:32,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:40:32,172 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2018-11-28 23:40:32,172 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:40:32,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:40:32,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:32,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:40:32,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:32,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:40:32,196 INFO L82 PathProgramCache]: Analyzing trace with hash 41592519, now seen corresponding path program 1 times [2018-11-28 23:40:32,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:40:32,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:40:32,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:32,200 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:40:32,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:32,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:40:32,220 INFO L82 PathProgramCache]: Analyzing trace with hash 95032871, now seen corresponding path program 1 times [2018-11-28 23:40:32,221 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:40:32,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:40:32,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:32,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:40:32,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:32,470 WARN L180 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 14 [2018-11-28 23:40:32,611 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2018-11-28 23:40:32,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:40:32 BoogieIcfgContainer [2018-11-28 23:40:32,623 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:40:32,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:40:32,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:40:32,624 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:40:32,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:40:31" (3/4) ... [2018-11-28 23:40:32,628 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-28 23:40:32,670 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:40:32,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:40:32,671 INFO L168 Benchmark]: Toolchain (without parser) took 2384.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 948.7 MB in the beginning and 1.0 GB in the end (delta: -81.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:40:32,672 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:40:32,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.20 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 936.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:40:32,674 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.77 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:40:32,674 INFO L168 Benchmark]: Boogie Preprocessor took 45.60 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:40:32,675 INFO L168 Benchmark]: RCFGBuilder took 651.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -148.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:40:32,676 INFO L168 Benchmark]: BuchiAutomizer took 1218.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 11.5 GB. [2018-11-28 23:40:32,677 INFO L168 Benchmark]: Witness Printer took 46.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:40:32,682 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 366.20 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 936.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.77 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.60 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 651.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -148.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1218.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 11.5 GB. * Witness Printer took 46.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 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 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 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, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 76]: Nontermination argument in form of an infinite program execution. [2018-11-28 23:40:32,693 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2018-11-28 23:40:32,694 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@453dec8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6362a910=0, \result=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26ff3ca3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@55d5fb5a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7389d1c3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@57be956a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24eceaa7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bd173d5=1, NULL=0, open_called=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@671b0199=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@371b6263=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...