./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ldv-regression/stateful_check.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1225f82562543767c482452e9133e4a69d5dae70 ................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:15:48,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:15:48,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:15:48,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:15:48,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:15:48,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:15:48,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:15:48,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:15:48,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:15:48,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:15:48,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:15:48,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:15:48,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:15:48,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:15:48,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:15:48,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:15:48,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:15:48,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:15:48,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:15:48,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:15:48,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:15:48,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:15:48,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:15:48,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:15:48,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:15:48,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:15:48,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:15:48,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:15:48,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:15:48,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:15:48,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:15:48,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:15:48,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:15:48,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:15:48,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:15:48,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:15:48,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:15:48,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:15:48,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:15:48,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:15:48,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:15:48,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-16 00:15:49,005 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:15:49,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:15:49,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:15:49,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:15:49,007 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:15:49,007 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-16 00:15:49,007 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-16 00:15:49,008 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-16 00:15:49,008 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-16 00:15:49,008 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-16 00:15:49,008 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-16 00:15:49,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:15:49,009 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:15:49,009 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-16 00:15:49,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:15:49,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:15:49,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:15:49,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-16 00:15:49,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-16 00:15:49,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-16 00:15:49,011 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:15:49,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:15:49,011 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-16 00:15:49,011 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:15:49,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-16 00:15:49,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:15:49,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:15:49,013 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-16 00:15:49,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:15:49,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:15:49,013 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-16 00:15:49,014 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-16 00:15:49,015 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1225f82562543767c482452e9133e4a69d5dae70 [2019-11-16 00:15:49,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:15:49,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:15:49,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:15:49,055 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:15:49,055 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:15:49,056 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/stateful_check.c [2019-11-16 00:15:49,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/data/9e4b4cf86/866c094c2da342238220d4af6b6fdad0/FLAG9105415ce [2019-11-16 00:15:49,550 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:15:49,550 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/sv-benchmarks/c/ldv-regression/stateful_check.c [2019-11-16 00:15:49,557 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/data/9e4b4cf86/866c094c2da342238220d4af6b6fdad0/FLAG9105415ce [2019-11-16 00:15:49,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/data/9e4b4cf86/866c094c2da342238220d4af6b6fdad0 [2019-11-16 00:15:49,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:15:49,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:15:49,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:15:49,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:15:49,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:15:49,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:49" (1/1) ... [2019-11-16 00:15:49,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e960fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49, skipping insertion in model container [2019-11-16 00:15:49,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:49" (1/1) ... [2019-11-16 00:15:49,599 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:15:49,620 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:15:49,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:15:49,883 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:15:49,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:15:49,930 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:15:49,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49 WrapperNode [2019-11-16 00:15:49,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:15:49,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:15:49,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:15:49,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:15:49,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49" (1/1) ... [2019-11-16 00:15:49,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49" (1/1) ... [2019-11-16 00:15:49,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:15:49,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:15:49,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:15:49,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:15:49,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49" (1/1) ... [2019-11-16 00:15:49,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49" (1/1) ... [2019-11-16 00:15:49,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49" (1/1) ... [2019-11-16 00:15:49,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49" (1/1) ... [2019-11-16 00:15:49,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49" (1/1) ... [2019-11-16 00:15:49,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49" (1/1) ... [2019-11-16 00:15:49,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49" (1/1) ... [2019-11-16 00:15:49,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:15:49,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:15:49,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:15:49,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:15:49,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:15:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:15:50,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:15:50,433 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:15:50,433 INFO L284 CfgBuilder]: Removed 35 assume(true) statements. [2019-11-16 00:15:50,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:50 BoogieIcfgContainer [2019-11-16 00:15:50,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:15:50,435 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-16 00:15:50,435 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-16 00:15:50,437 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-16 00:15:50,438 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:15:50,438 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 12:15:49" (1/3) ... [2019-11-16 00:15:50,439 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33b6e8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:15:50, skipping insertion in model container [2019-11-16 00:15:50,439 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:15:50,439 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:49" (2/3) ... [2019-11-16 00:15:50,440 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33b6e8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:15:50, skipping insertion in model container [2019-11-16 00:15:50,440 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:15:50,440 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:50" (3/3) ... [2019-11-16 00:15:50,442 INFO L371 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2019-11-16 00:15:50,475 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-16 00:15:50,476 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-16 00:15:50,476 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-16 00:15:50,476 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:15:50,476 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:15:50,476 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-16 00:15:50,476 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:15:50,476 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-16 00:15:50,489 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2019-11-16 00:15:50,506 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2019-11-16 00:15:50,507 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:15:50,507 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:15:50,512 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-16 00:15:50,513 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-16 00:15:50,513 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-16 00:15:50,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2019-11-16 00:15:50,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2019-11-16 00:15:50,516 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:15:50,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:15:50,516 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-16 00:15:50,517 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-16 00:15:50,524 INFO L791 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRYtrue ~ldv_mutex~0 := 1;~open_called~0 := 0; 8#L-1true havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 27#L70true main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 10#L76-2true [2019-11-16 00:15:50,524 INFO L793 eck$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 [2019-11-16 00:15:50,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:15:50,529 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2019-11-16 00:15:50,535 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:15:50,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482886465] [2019-11-16 00:15:50,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,536 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:15:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:50,609 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:15:50,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:15:50,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1327177, now seen corresponding path program 1 times [2019-11-16 00:15:50,610 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:15:50,610 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278264879] [2019-11-16 00:15:50,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:15:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:50,620 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:15:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:15:50,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1804166377, now seen corresponding path program 1 times [2019-11-16 00:15:50,622 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:15:50,622 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479699355] [2019-11-16 00:15:50,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:15:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:15:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:15:50,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479699355] [2019-11-16 00:15:50,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:15:50,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:15:50,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597254131] [2019-11-16 00:15:50,743 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:15:50,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:15:50,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:15:50,760 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2019-11-16 00:15:50,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:15:50,815 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2019-11-16 00:15:50,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:15:50,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 73 transitions. [2019-11-16 00:15:50,820 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2019-11-16 00:15:50,824 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 41 states and 57 transitions. [2019-11-16 00:15:50,825 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-16 00:15:50,826 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-11-16 00:15:50,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 57 transitions. [2019-11-16 00:15:50,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-16 00:15:50,827 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-11-16 00:15:50,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 57 transitions. [2019-11-16 00:15:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-11-16 00:15:50,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-16 00:15:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2019-11-16 00:15:50,857 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-11-16 00:15:50,857 INFO L591 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-11-16 00:15:50,857 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-16 00:15:50,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 57 transitions. [2019-11-16 00:15:50,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2019-11-16 00:15:50,859 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:15:50,859 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:15:50,859 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-16 00:15:50,860 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-16 00:15:50,860 INFO L791 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY ~ldv_mutex~0 := 1;~open_called~0 := 0; 120#L-1 havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 121#L70 main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 138#L76-2 [2019-11-16 00:15:50,860 INFO L793 eck$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 [2019-11-16 00:15:50,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:15:50,860 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2019-11-16 00:15:50,861 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:15:50,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322838192] [2019-11-16 00:15:50,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:15:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:50,869 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:15:50,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:15:50,870 INFO L82 PathProgramCache]: Analyzing trace with hash 41592519, now seen corresponding path program 1 times [2019-11-16 00:15:50,870 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:15:50,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502194640] [2019-11-16 00:15:50,870 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,870 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:15:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:50,879 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:15:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:15:50,880 INFO L82 PathProgramCache]: Analyzing trace with hash 95032871, now seen corresponding path program 1 times [2019-11-16 00:15:50,880 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:15:50,880 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193215337] [2019-11-16 00:15:50,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:50,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:15:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:50,893 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:15:51,000 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 [2019-11-16 00:15:51,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 12:15:51 BoogieIcfgContainer [2019-11-16 00:15:51,010 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-16 00:15:51,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:15:51,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:15:51,011 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:15:51,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:50" (3/4) ... [2019-11-16 00:15:51,014 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-16 00:15:51,052 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e7a0514b-6d8f-487e-a051-c2d13856fed0/bin/uautomizer/witness.graphml [2019-11-16 00:15:51,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:15:51,054 INFO L168 Benchmark]: Toolchain (without parser) took 1469.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -123.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:51,055 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:15:51,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:51,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.63 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:51,063 INFO L168 Benchmark]: Boogie Preprocessor took 21.32 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:51,063 INFO L168 Benchmark]: RCFGBuilder took 452.33 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:51,064 INFO L168 Benchmark]: BuchiAutomizer took 575.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:51,065 INFO L168 Benchmark]: Witness Printer took 41.47 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: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:51,074 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 346.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.63 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.32 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 452.33 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 575.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. * Witness Printer took 41.47 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: 1.4 MB). Peak memory consumption was 1.4 MB. 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 0.5s 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. [2019-11-16 00:15:51,090 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 [2019-11-16 00:15:51,092 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@63f5fff1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f051bc0=0, \result=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@371cda44=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@786f458a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60ccd0d1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@19d77dbb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8530f02=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@390df01c=1, NULL=0, open_called=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79cdfc78=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@725965a5=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...