./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product27.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 576a1858cb64f3543afb00cb741cc3175c43895a ........................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.1-dev-20ed64e [2021-08-27 15:54:37,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:54:37,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:54:37,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:54:37,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:54:37,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:54:37,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:54:37,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:54:37,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:54:37,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:54:37,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:54:37,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:54:37,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:54:37,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:54:37,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:54:37,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:54:37,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:54:37,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:54:37,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:54:37,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:54:37,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:54:37,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:54:37,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:54:37,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:54:37,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:54:37,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:54:37,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:54:37,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:54:37,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:54:37,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:54:37,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:54:37,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:54:37,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:54:37,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:54:37,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:54:37,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:54:37,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:54:37,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:54:37,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:54:37,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:54:37,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:54:37,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:54:38,016 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:54:38,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:54:38,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:54:38,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:54:38,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:54:38,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:54:38,023 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:54:38,024 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:54:38,024 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:54:38,024 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:54:38,025 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:54:38,025 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:54:38,025 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:54:38,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:54:38,026 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:54:38,026 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:54:38,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:54:38,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:54:38,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:54:38,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:54:38,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:54:38,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:54:38,027 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:54:38,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:54:38,028 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:54:38,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:54:38,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:54:38,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:54:38,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:54:38,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:54:38,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:54:38,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:54:38,030 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:54:38,031 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 576a1858cb64f3543afb00cb741cc3175c43895a [2021-08-27 15:54:38,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:54:38,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:54:38,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:54:38,373 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:54:38,373 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:54:38,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product27.cil.c [2021-08-27 15:54:38,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b1d112ad/a49f17d514d34493a93557a9ecd90d23/FLAG9a7d234d5 [2021-08-27 15:54:38,929 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:54:38,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product27.cil.c [2021-08-27 15:54:38,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b1d112ad/a49f17d514d34493a93557a9ecd90d23/FLAG9a7d234d5 [2021-08-27 15:54:39,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b1d112ad/a49f17d514d34493a93557a9ecd90d23 [2021-08-27 15:54:39,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:54:39,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:54:39,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:54:39,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:54:39,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:54:39,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6154151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39, skipping insertion in model container [2021-08-27 15:54:39,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:54:39,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:54:39,456 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product27.cil.c[1817,1830] [2021-08-27 15:54:39,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:54:39,561 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:54:39,593 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product27.cil.c[1817,1830] [2021-08-27 15:54:39,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:54:39,651 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:54:39,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39 WrapperNode [2021-08-27 15:54:39,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:54:39,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:54:39,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:54:39,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:54:39,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:54:39,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:54:39,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:54:39,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:54:39,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:54:39,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:54:39,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:54:39,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:54:39,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39" (1/1) ... [2021-08-27 15:54:39,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:54:39,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:54:39,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:54:39,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 15:54:39,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:54:39,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:54:39,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:54:39,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:54:40,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:54:40,526 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-08-27 15:54:40,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:54:40 BoogieIcfgContainer [2021-08-27 15:54:40,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:54:40,529 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:54:40,529 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:54:40,532 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:54:40,533 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:54:40,533 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:54:39" (1/3) ... [2021-08-27 15:54:40,534 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d281319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:54:40, skipping insertion in model container [2021-08-27 15:54:40,534 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:54:40,534 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:39" (2/3) ... [2021-08-27 15:54:40,535 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d281319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:54:40, skipping insertion in model container [2021-08-27 15:54:40,535 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:54:40,535 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:54:40" (3/3) ... [2021-08-27 15:54:40,536 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product27.cil.c [2021-08-27 15:54:40,574 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:54:40,574 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:54:40,575 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:54:40,575 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:54:40,575 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:54:40,575 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:54:40,575 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:54:40,575 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:54:40,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 74 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 73 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:54:40,609 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 15:54:40,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:54:40,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:54:40,616 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:54:40,616 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:54:40,616 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:54:40,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 74 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 73 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:54:40,630 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 15:54:40,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:54:40,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:54:40,632 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:54:40,632 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:54:40,642 INFO L791 eck$LassoCheckResult]: Stem: 61#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(30);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(9);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(21);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 48#L-1true havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~5, main_~tmp~1;havoc main_~retValue_acc~5;havoc main_~tmp~1; 58#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 71#L75true main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 41#L297true assume 0 != main_~tmp~1; 72#L273true havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 10#L194-1true [2021-08-27 15:54:40,643 INFO L793 eck$LassoCheckResult]: Loop: 10#L194-1true assume !false; 16#L689true assume test_~splverifierCounter~0 < 4; 66#L690true test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 34#L698true assume !(0 != test_~tmp~5); 33#L698-1true test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 15#L708true assume !(0 != test_~tmp___0~1); 30#L708-1true test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 28#L718true assume 0 != test_~tmp___2~0; 62#L724-1true assume !(0 != ~pumpRunning~0); 6#L754true assume !(0 != ~systemActive~0); 31#L761true havoc __utac_acc__Specification1_spec__1_#t~ret18, __utac_acc__Specification1_spec__1_#t~ret19, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 36#L139true __utac_acc__Specification1_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret18;havoc __utac_acc__Specification1_spec__1_#t~ret18; 35#L194true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 10#L194-1true [2021-08-27 15:54:40,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:54:40,650 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:54:40,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:54:40,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531034544] [2021-08-27 15:54:40,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:54:40,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:54:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:54:40,831 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:54:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:54:40,966 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:54:40,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:54:40,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1673095029, now seen corresponding path program 1 times [2021-08-27 15:54:40,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:54:40,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674326122] [2021-08-27 15:54:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:54:40,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:54:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:54:40,989 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:54:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:54:41,000 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:54:41,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:54:41,005 INFO L82 PathProgramCache]: Analyzing trace with hash 41183909, now seen corresponding path program 1 times [2021-08-27 15:54:41,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:54:41,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390433181] [2021-08-27 15:54:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:54:41,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:54:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:54:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:54:41,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:54:41,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390433181] [2021-08-27 15:54:41,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390433181] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:54:41,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:54:41,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 15:54:41,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965641356] [2021-08-27 15:54:41,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:54:41,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 15:54:41,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 15:54:41,307 INFO L87 Difference]: Start difference. First operand has 74 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 73 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:54:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:54:41,561 INFO L93 Difference]: Finished difference Result 192 states and 264 transitions. [2021-08-27 15:54:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 15:54:41,563 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 192 states and 264 transitions. [2021-08-27 15:54:41,574 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 121 [2021-08-27 15:54:41,580 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 192 states to 171 states and 243 transitions. [2021-08-27 15:54:41,582 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 171 [2021-08-27 15:54:41,584 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 171 [2021-08-27 15:54:41,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 171 states and 243 transitions. [2021-08-27 15:54:41,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:54:41,587 INFO L681 BuchiCegarLoop]: Abstraction has 171 states and 243 transitions. [2021-08-27 15:54:41,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states and 243 transitions. [2021-08-27 15:54:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 108. [2021-08-27 15:54:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 108 states have (on average 1.4166666666666667) internal successors, (153), 107 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:54:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2021-08-27 15:54:41,614 INFO L704 BuchiCegarLoop]: Abstraction has 108 states and 153 transitions. [2021-08-27 15:54:41,614 INFO L587 BuchiCegarLoop]: Abstraction has 108 states and 153 transitions. [2021-08-27 15:54:41,614 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:54:41,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 108 states and 153 transitions. [2021-08-27 15:54:41,615 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 76 [2021-08-27 15:54:41,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:54:41,616 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:54:41,616 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:54:41,616 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:54:41,617 INFO L791 eck$LassoCheckResult]: Stem: 350#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(30);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(9);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(21);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 341#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~5, main_~tmp~1;havoc main_~retValue_acc~5;havoc main_~tmp~1; 342#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 348#L75 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 337#L297 assume 0 != main_~tmp~1; 338#L273 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 293#L194-1 [2021-08-27 15:54:41,617 INFO L793 eck$LassoCheckResult]: Loop: 293#L194-1 assume !false; 298#L689 assume test_~splverifierCounter~0 < 4; 308#L690 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 331#L698 assume !(0 != test_~tmp~5); 330#L698-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 305#L708 assume !(0 != test_~tmp___0~1); 287#L708-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 327#L718 assume 0 != test_~tmp___2~0; 324#L724-1 assume !(0 != ~pumpRunning~0); 288#L754 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret60, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 289#L786 assume !(0 != ~pumpRunning~0); 291#L761 havoc __utac_acc__Specification1_spec__1_#t~ret18, __utac_acc__Specification1_spec__1_#t~ret19, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 329#L139 __utac_acc__Specification1_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret18;havoc __utac_acc__Specification1_spec__1_#t~ret18; 333#L194 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 293#L194-1 [2021-08-27 15:54:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:54:41,617 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:54:41,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:54:41,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866640834] [2021-08-27 15:54:41,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:54:41,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:54:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:54:41,650 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:54:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:54:41,689 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:54:41,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:54:41,690 INFO L82 PathProgramCache]: Analyzing trace with hash -353331269, now seen corresponding path program 1 times [2021-08-27 15:54:41,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:54:41,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450015996] [2021-08-27 15:54:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:54:41,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:54:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:54:41,695 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:54:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:54:41,700 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:54:41,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:54:41,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1249708257, now seen corresponding path program 1 times [2021-08-27 15:54:41,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:54:41,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028103702] [2021-08-27 15:54:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:54:41,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:54:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:54:41,742 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:54:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:54:41,787 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:55:21,959 WARN L207 SmtUtils]: Spent 40.09 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 15:56:02,097 WARN L207 SmtUtils]: Spent 19.54 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 15:56:02,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:56:02 BoogieIcfgContainer [2021-08-27 15:56:02,176 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:56:02,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:56:02,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:56:02,177 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:56:02,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:54:40" (3/4) ... [2021-08-27 15:56:02,180 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:56:02,212 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:56:02,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:56:02,213 INFO L168 Benchmark]: Toolchain (without parser) took 82947.41 ms. Allocated memory was 52.4 MB in the beginning and 96.5 MB in the end (delta: 44.0 MB). Free memory was 28.8 MB in the beginning and 31.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:56:02,214 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 34.7 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:56:02,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.10 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 28.6 MB in the beginning and 42.7 MB in the end (delta: -14.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:56:02,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.77 ms. Allocated memory is still 65.0 MB. Free memory was 42.7 MB in the beginning and 39.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:56:02,215 INFO L168 Benchmark]: Boogie Preprocessor took 65.90 ms. Allocated memory is still 65.0 MB. Free memory was 39.8 MB in the beginning and 37.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:56:02,215 INFO L168 Benchmark]: RCFGBuilder took 759.77 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 37.7 MB in the beginning and 48.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-08-27 15:56:02,216 INFO L168 Benchmark]: BuchiAutomizer took 81647.22 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 48.6 MB in the beginning and 33.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 16.1 GB. [2021-08-27 15:56:02,216 INFO L168 Benchmark]: Witness Printer took 35.51 ms. Allocated memory is still 96.5 MB. Free memory was 33.3 MB in the beginning and 31.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:56:02,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 34.7 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 385.10 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 28.6 MB in the beginning and 42.7 MB in the end (delta: -14.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.77 ms. Allocated memory is still 65.0 MB. Free memory was 42.7 MB in the beginning and 39.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.90 ms. Allocated memory is still 65.0 MB. Free memory was 39.8 MB in the beginning and 37.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 759.77 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 37.7 MB in the beginning and 48.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 81647.22 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 48.6 MB in the beginning and 33.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 16.1 GB. * Witness Printer took 35.51 ms. Allocated memory is still 96.5 MB. Free memory was 33.3 MB in the beginning and 31.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 6 locations. The remainder module has 108 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 81.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 81.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 16.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 63 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 108 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 98 SDtfs, 370 SDslu, 524 SDs, 0 SdLazy, 42 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 165.3ms 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: 688]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=23124} State at position 1 is {NULL=23127, NULL=0, NULL=0, NULL=23124, NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=23131, NULL=23148, NULL=23142, methaneLevelCritical=0, NULL=23146, tmp=0, NULL=23129, NULL=0, NULL=0, NULL=23141, tmp___1=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cc2daff=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56de0f93=0, NULL=23147, cleanupTimeShifts=4, NULL=23143, NULL=23132, NULL=23133, NULL=23126, NULL=0, systemActive=1, waterLevel=1, NULL=0, retValue_acc=0, NULL=23153, NULL=0, NULL=0, NULL=0, NULL=23151, \result=1, head=0, pumpRunning=0, NULL=23138, \result=0, NULL=23137, NULL=23125, NULL=23136, tmp=1, NULL=0, NULL=0, NULL=0, NULL=0, tmp=0, NULL=23139, NULL=0, NULL=0, NULL=0, NULL=23149, NULL=0, retValue_acc=1, tmp___2=65, tmp___0=0, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=23128, NULL=23144, NULL=23152, NULL=23130, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6cfc01b0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f4a2657=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34e833ee=65, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@790d44ec=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55c70775=0, head=0, tmp=0, NULL=0, NULL=23135, NULL=23145, NULL=0, NULL=0, NULL=23150, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f65a6c0=0, NULL=23140} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L96] int waterLevel = 1; [L97] int methaneLevelCritical = 0; [L212] int cleanupTimeShifts = 4; [L480] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L747] int pumpRunning = 0; [L748] int systemActive = 1; [L288] int retValue_acc ; [L289] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L295] tmp = valid_product() [L297] COND TRUE \read(tmp) [L679] int splverifierCounter ; [L680] int tmp ; [L681] int tmp___0 ; [L682] int tmp___1 ; [L683] int tmp___2 ; [L686] splverifierCounter = 0 Loop: [L688] COND TRUE 1 [L690] COND TRUE splverifierCounter < 4 [L696] tmp = __VERIFIER_nondet_int() [L698] COND FALSE !(\read(tmp)) [L706] tmp___0 = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp___0)) [L716] tmp___2 = __VERIFIER_nondet_int() [L718] COND TRUE \read(tmp___2) [L754] COND FALSE !(\read(pumpRunning)) [L761] COND TRUE \read(systemActive) [L783] int tmp ; [L786] COND FALSE !(\read(pumpRunning)) [L187] int tmp ; [L188] int tmp___0 ; [L135] int retValue_acc ; [L138] retValue_acc = methaneLevelCritical [L139] return (retValue_acc); [L192] tmp = isMethaneLevelCritical() [L194] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 15:56:02,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...