./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/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ldv-regression/stateful_check.c -s /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/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 [2019-10-22 08:54:43,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:43,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:43,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:43,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:43,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:43,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:43,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:43,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:43,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:43,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:43,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:43,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:43,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:43,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:43,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:43,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:43,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:43,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:43,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:43,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:43,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:43,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:43,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:43,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:43,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:43,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:43,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:43,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:43,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:43,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:43,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:43,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:43,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:43,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:43,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:43,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:43,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:43,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:43,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:43,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:43,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:54:43,323 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:43,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:43,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:43,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:43,325 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:43,325 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:54:43,325 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:54:43,326 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:54:43,326 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:54:43,326 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:54:43,326 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:54:43,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:43,327 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:54:43,327 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:54:43,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:43,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:54:43,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:43,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:54:43,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:54:43,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:54:43,328 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:54:43,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:43,329 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:54:43,329 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:43,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:54:43,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:43,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:43,329 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:54:43,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:43,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:43,331 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:54:43,331 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:54:43,332 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/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/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 [2019-10-22 08:54:43,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:43,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:43,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:43,378 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:43,379 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:43,379 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/stateful_check.c [2019-10-22 08:54:43,437 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/bin/uautomizer/data/a735e920d/2f07aead187648bfa7b6af426d7468a2/FLAG0c62f1340 [2019-10-22 08:54:43,815 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:43,818 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/sv-benchmarks/c/ldv-regression/stateful_check.c [2019-10-22 08:54:43,824 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/bin/uautomizer/data/a735e920d/2f07aead187648bfa7b6af426d7468a2/FLAG0c62f1340 [2019-10-22 08:54:44,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/bin/uautomizer/data/a735e920d/2f07aead187648bfa7b6af426d7468a2 [2019-10-22 08:54:44,209 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:44,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:44,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:44,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:44,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:44,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:44" (1/1) ... [2019-10-22 08:54:44,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@548ff760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44, skipping insertion in model container [2019-10-22 08:54:44,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:44" (1/1) ... [2019-10-22 08:54:44,232 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:44,252 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:44,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:44,464 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:44,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:44,571 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:44,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44 WrapperNode [2019-10-22 08:54:44,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:44,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:44,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:44,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:44,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44" (1/1) ... [2019-10-22 08:54:44,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44" (1/1) ... [2019-10-22 08:54:44,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:44,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:44,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:44,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:44,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44" (1/1) ... [2019-10-22 08:54:44,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44" (1/1) ... [2019-10-22 08:54:44,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44" (1/1) ... [2019-10-22 08:54:44,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44" (1/1) ... [2019-10-22 08:54:44,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44" (1/1) ... [2019-10-22 08:54:44,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44" (1/1) ... [2019-10-22 08:54:44,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44" (1/1) ... [2019-10-22 08:54:44,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:44,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:44,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:44,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:44,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/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 [2019-10-22 08:54:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:44,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:45,005 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:45,005 INFO L284 CfgBuilder]: Removed 35 assume(true) statements. [2019-10-22 08:54:45,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:45 BoogieIcfgContainer [2019-10-22 08:54:45,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:45,007 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:54:45,007 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:54:45,011 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:54:45,012 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:45,012 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:54:44" (1/3) ... [2019-10-22 08:54:45,013 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d881cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:54:45, skipping insertion in model container [2019-10-22 08:54:45,013 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:45,014 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:44" (2/3) ... [2019-10-22 08:54:45,014 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d881cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:54:45, skipping insertion in model container [2019-10-22 08:54:45,014 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:45,015 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:45" (3/3) ... [2019-10-22 08:54:45,016 INFO L371 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2019-10-22 08:54:45,091 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:54:45,091 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:54:45,091 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:54:45,091 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:45,092 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:45,092 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:54:45,092 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:45,092 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:54:45,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2019-10-22 08:54:45,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2019-10-22 08:54:45,136 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:45,136 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:45,144 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:54:45,145 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:54:45,146 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:54:45,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2019-10-22 08:54:45,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2019-10-22 08:54:45,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:45,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:45,154 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:54:45,155 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:54:45,167 INFO L791 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRYtrue ~ldv_mutex~0 := 1;~open_called~0 := 0; 8#L-1true havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 27#L70true main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 10#L76-2true [2019-10-22 08:54:45,167 INFO L793 eck$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 [2019-10-22 08:54:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:45,173 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2019-10-22 08:54:45,184 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:45,184 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990985155] [2019-10-22 08:54:45,185 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,185 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:45,273 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:45,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:45,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1327177, now seen corresponding path program 1 times [2019-10-22 08:54:45,274 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:45,274 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870950499] [2019-10-22 08:54:45,274 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,275 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:45,286 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:45,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1804166377, now seen corresponding path program 1 times [2019-10-22 08:54:45,288 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:45,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440911321] [2019-10-22 08:54:45,288 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,288 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:45,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440911321] [2019-10-22 08:54:45,341 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:45,341 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:45,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019518890] [2019-10-22 08:54:45,417 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:45,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:54:45,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:45,433 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2019-10-22 08:54:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:45,487 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2019-10-22 08:54:45,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:54:45,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 73 transitions. [2019-10-22 08:54:45,492 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2019-10-22 08:54:45,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 41 states and 57 transitions. [2019-10-22 08:54:45,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-10-22 08:54:45,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-10-22 08:54:45,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 57 transitions. [2019-10-22 08:54:45,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:54:45,500 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-10-22 08:54:45,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 57 transitions. [2019-10-22 08:54:45,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-10-22 08:54:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-22 08:54:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2019-10-22 08:54:45,534 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-10-22 08:54:45,534 INFO L591 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-10-22 08:54:45,534 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:54:45,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 57 transitions. [2019-10-22 08:54:45,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2019-10-22 08:54:45,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:45,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:45,536 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:54:45,536 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-10-22 08:54:45,537 INFO L791 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY ~ldv_mutex~0 := 1;~open_called~0 := 0; 120#L-1 havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 121#L70 main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 138#L76-2 [2019-10-22 08:54:45,537 INFO L793 eck$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 [2019-10-22 08:54:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2019-10-22 08:54:45,538 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:45,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676137968] [2019-10-22 08:54:45,538 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,538 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:45,547 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:45,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:45,547 INFO L82 PathProgramCache]: Analyzing trace with hash 41592519, now seen corresponding path program 1 times [2019-10-22 08:54:45,547 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:45,548 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074395203] [2019-10-22 08:54:45,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:45,558 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:45,558 INFO L82 PathProgramCache]: Analyzing trace with hash 95032871, now seen corresponding path program 1 times [2019-10-22 08:54:45,558 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:45,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558442762] [2019-10-22 08:54:45,559 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,559 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:45,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:45,571 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:45,719 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 [2019-10-22 08:54:45,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:54:45 BoogieIcfgContainer [2019-10-22 08:54:45,735 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:54:45,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:45,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:45,736 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:45,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:45" (3/4) ... [2019-10-22 08:54:45,739 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-10-22 08:54:45,777 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_94530ae5-f1f9-4040-83f8-465a26e089d0/bin/uautomizer/witness.graphml [2019-10-22 08:54:45,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:45,779 INFO L168 Benchmark]: Toolchain (without parser) took 1568.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 940.4 MB in the beginning and 1.0 GB in the end (delta: -105.4 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:45,780 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:45,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:45,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.69 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:45,782 INFO L168 Benchmark]: Boogie Preprocessor took 34.46 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:45,782 INFO L168 Benchmark]: RCFGBuilder took 357.53 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:45,783 INFO L168 Benchmark]: BuchiAutomizer took 728.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:45,783 INFO L168 Benchmark]: Witness Printer took 41.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:45,786 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 357.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.69 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.46 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 357.53 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 728.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 11.5 GB. * Witness Printer took 41.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 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 0.6s 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. [2019-10-22 08:54:45,793 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 [2019-10-22 08:54:45,794 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@285dd8e8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b6cb67=0, \result=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@373ef1f6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@557b3ef5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59303395=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@5583cc84=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@500d96ff=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1467f26a=1, NULL=0, open_called=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78ef3c12=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@3ba8537d=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...