./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product03.cil.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_825ea728-0b52-4768-b16c-08987e3a9118/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product03.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/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 181dcb39cfcdf755d846c39f79068002a5e5061c
....................................................................................................................................................................................................................................................................................................................................................................................
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 09:03:04,668 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-22 09:03:04,670 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-22 09:03:04,681 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-22 09:03:04,681 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-22 09:03:04,682 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-22 09:03:04,684 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-22 09:03:04,686 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-22 09:03:04,687 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-22 09:03:04,688 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-22 09:03:04,690 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-22 09:03:04,691 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-22 09:03:04,691 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-22 09:03:04,692 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-22 09:03:04,693 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-22 09:03:04,694 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-22 09:03:04,695 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-22 09:03:04,696 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-22 09:03:04,697 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-22 09:03:04,699 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-22 09:03:04,701 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-22 09:03:04,702 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-22 09:03:04,703 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-22 09:03:04,704 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-22 09:03:04,711 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-22 09:03:04,711 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-22 09:03:04,712 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-22 09:03:04,712 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-22 09:03:04,713 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-22 09:03:04,720 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-22 09:03:04,721 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-22 09:03:04,721 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-22 09:03:04,722 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-22 09:03:04,723 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-22 09:03:04,724 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-22 09:03:04,724 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-22 09:03:04,724 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-22 09:03:04,725 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-22 09:03:04,725 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-22 09:03:04,726 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-22 09:03:04,726 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-22 09:03:04,727 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf
[2019-10-22 09:03:04,750 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-22 09:03:04,751 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-22 09:03:04,752 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-22 09:03:04,752 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-22 09:03:04,752 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-22 09:03:04,753 INFO  L136        SettingsManager]: Preferences of BuchiAutomizer differ from their defaults:
[2019-10-22 09:03:04,753 INFO  L138        SettingsManager]:  * NCSB implementation=INTSET_LAZY3
[2019-10-22 09:03:04,753 INFO  L138        SettingsManager]:  * Use old map elimination=false
[2019-10-22 09:03:04,754 INFO  L138        SettingsManager]:  * Use external solver (rank synthesis)=false
[2019-10-22 09:03:04,755 INFO  L138        SettingsManager]:  * Use only trivial implications for array writes=true
[2019-10-22 09:03:04,755 INFO  L138        SettingsManager]:  * Rank analysis=LINEAR_WITH_GUESSES
[2019-10-22 09:03:04,755 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-22 09:03:04,755 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-22 09:03:04,755 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2019-10-22 09:03:04,755 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-22 09:03:04,756 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-22 09:03:04,756 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-22 09:03:04,756 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=ASSUME
[2019-10-22 09:03:04,756 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=ASSUME
[2019-10-22 09:03:04,756 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=ASSUME
[2019-10-22 09:03:04,757 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-22 09:03:04,757 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-22 09:03:04,757 INFO  L138        SettingsManager]:  * Assume nondeterminstic values are in range=false
[2019-10-22 09:03:04,758 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-22 09:03:04,759 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=ASSUME
[2019-10-22 09:03:04,759 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-22 09:03:04,759 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-22 09:03:04,759 INFO  L138        SettingsManager]:  * To the following directory=/home/matthias/ultimate/dump
[2019-10-22 09:03:04,759 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-22 09:03:04,760 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-22 09:03:04,760 INFO  L138        SettingsManager]:  * Dump automata to the following directory=/home/matthias/ultimate/dump/auto
[2019-10-22 09:03:04,761 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2019-10-22 09:03:04,761 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_825ea728-0b52-4768-b16c-08987e3a9118/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 -> 181dcb39cfcdf755d846c39f79068002a5e5061c
[2019-10-22 09:03:04,792 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-22 09:03:04,804 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-22 09:03:04,808 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-22 09:03:04,810 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-22 09:03:04,810 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-22 09:03:04,811 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product03.cil.c
[2019-10-22 09:03:04,871 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/bin/uautomizer/data/3cb5a745e/0d077ea591eb475aa5cf47deb242ad03/FLAGbc6fc69ce
[2019-10-22 09:03:05,401 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-22 09:03:05,402 INFO  L160              CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/sv-benchmarks/c/product-lines/minepump_spec5_product03.cil.c
[2019-10-22 09:03:05,423 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/bin/uautomizer/data/3cb5a745e/0d077ea591eb475aa5cf47deb242ad03/FLAGbc6fc69ce
[2019-10-22 09:03:05,695 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/bin/uautomizer/data/3cb5a745e/0d077ea591eb475aa5cf47deb242ad03
[2019-10-22 09:03:05,697 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-22 09:03:05,698 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2019-10-22 09:03:05,699 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-22 09:03:05,699 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-22 09:03:05,702 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-22 09:03:05,703 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:03:05" (1/1) ...
[2019-10-22 09:03:05,706 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639c601d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05, skipping insertion in model container
[2019-10-22 09:03:05,706 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:03:05" (1/1) ...
[2019-10-22 09:03:05,713 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-22 09:03:05,757 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-22 09:03:06,097 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-22 09:03:06,109 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-22 09:03:06,191 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-22 09:03:06,220 INFO  L192         MainTranslator]: Completed translation
[2019-10-22 09:03:06,220 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06 WrapperNode
[2019-10-22 09:03:06,220 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-22 09:03:06,221 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-10-22 09:03:06,221 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-10-22 09:03:06,221 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-10-22 09:03:06,233 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06" (1/1) ...
[2019-10-22 09:03:06,250 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06" (1/1) ...
[2019-10-22 09:03:06,289 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-10-22 09:03:06,289 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-22 09:03:06,289 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-22 09:03:06,290 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-22 09:03:06,298 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06" (1/1) ...
[2019-10-22 09:03:06,298 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06" (1/1) ...
[2019-10-22 09:03:06,300 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06" (1/1) ...
[2019-10-22 09:03:06,301 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06" (1/1) ...
[2019-10-22 09:03:06,307 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06" (1/1) ...
[2019-10-22 09:03:06,313 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06" (1/1) ...
[2019-10-22 09:03:06,315 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06" (1/1) ...
[2019-10-22 09:03:06,327 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-22 09:03:06,327 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-22 09:03:06,328 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-22 09:03:06,328 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-22 09:03:06,329 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06" (1/1) ...
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/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 09:03:06,401 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-22 09:03:06,401 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-10-22 09:03:06,401 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-22 09:03:06,401 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-22 09:03:07,032 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-22 09:03:07,032 INFO  L284             CfgBuilder]: Removed 84 assume(true) statements.
[2019-10-22 09:03:07,033 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:03:07 BoogieIcfgContainer
[2019-10-22 09:03:07,033 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-22 09:03:07,034 INFO  L113        PluginConnector]: ------------------------BuchiAutomizer----------------------------
[2019-10-22 09:03:07,034 INFO  L271        PluginConnector]: Initializing BuchiAutomizer...
[2019-10-22 09:03:07,038 INFO  L275        PluginConnector]: BuchiAutomizer initialized
[2019-10-22 09:03:07,039 INFO  L99          BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2019-10-22 09:03:07,040 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:03:05" (1/3) ...
[2019-10-22 09:03:07,041 INFO  L205        PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a3bca33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:03:07, skipping insertion in model container
[2019-10-22 09:03:07,042 INFO  L99          BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2019-10-22 09:03:07,042 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:06" (2/3) ...
[2019-10-22 09:03:07,042 INFO  L205        PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a3bca33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:03:07, skipping insertion in model container
[2019-10-22 09:03:07,042 INFO  L99          BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2019-10-22 09:03:07,042 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:03:07" (3/3) ...
[2019-10-22 09:03:07,044 INFO  L371   chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product03.cil.c
[2019-10-22 09:03:07,090 INFO  L356         BuchiCegarLoop]: Interprodecural is true
[2019-10-22 09:03:07,090 INFO  L357         BuchiCegarLoop]: Hoare is false
[2019-10-22 09:03:07,090 INFO  L358         BuchiCegarLoop]: Compute interpolants for ForwardPredicates
[2019-10-22 09:03:07,090 INFO  L359         BuchiCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-22 09:03:07,091 INFO  L360         BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-22 09:03:07,091 INFO  L361         BuchiCegarLoop]: Difference is false
[2019-10-22 09:03:07,091 INFO  L362         BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-22 09:03:07,091 INFO  L365         BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop========
[2019-10-22 09:03:07,108 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states.
[2019-10-22 09:03:07,136 INFO  L131   ngComponentsAnalysis]: Automaton has 2 accepting balls. 41
[2019-10-22 09:03:07,137 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2019-10-22 09:03:07,137 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2019-10-22 09:03:07,145 INFO  L849         BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1]
[2019-10-22 09:03:07,145 INFO  L850         BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-22 09:03:07,146 INFO  L424         BuchiCegarLoop]: ======== Iteration 1============
[2019-10-22 09:03:07,146 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states.
[2019-10-22 09:03:07,149 INFO  L131   ngComponentsAnalysis]: Automaton has 2 accepting balls. 41
[2019-10-22 09:03:07,149 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2019-10-22 09:03:07,149 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2019-10-22 09:03:07,150 INFO  L849         BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1]
[2019-10-22 09:03:07,150 INFO  L850         BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-22 09:03:07,155 INFO  L791   eck$LassoCheckResult]: Stem: 22#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~head~0.base, ~head~0.offset := 0, 0;call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(30);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(9);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(21);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(30);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(21);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(25);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(13);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(110, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string43.base, #t~string43.offset, 1);call write~init~int(102, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(102, #t~string43.base, 2 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 3 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(80, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(117, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(109, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(112, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string47.base, #t~string47.offset, 1);call write~init~int(110, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 2 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 3 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(32, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string53.base, #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 1 + #t~string53.offset, 1);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string64.base, #t~string64.offset, 1);call write~init~int(77, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(101, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(116, #t~string64.base, 3 + #t~string64.offset, 1);call write~init~int(104, #t~string64.base, 4 + #t~string64.offset, 1);call write~init~int(58, #t~string64.base, 5 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 6 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string66.base, #t~string66.offset, 1);call write~init~int(82, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(73, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(84, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 4 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(75, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string70.base, #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 1 + #t~string70.offset, 1); 5#L-1true havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 53#L543true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 58#L551true main_#t~ret35 := valid_product_#res;main_~tmp~3 := main_#t~ret35;havoc main_#t~ret35; 62#L507true assume 0 != main_~tmp~3; 55#L478true ~switchedOnBeforeTS~0 := 0; 9#L764true havoc test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 63#L785-1true 
[2019-10-22 09:03:07,156 INFO  L793   eck$LassoCheckResult]: Loop: 63#L785-1true assume !false; 57#L701true assume test_~splverifierCounter~0 < 4; 7#L702true test_~tmp~4 := test_#t~nondet54;havoc test_#t~nondet54; 29#L710true assume !(0 != test_~tmp~4); 32#L710-1true test_~tmp___0~0 := test_#t~nondet55;havoc test_#t~nondet55; 12#L720true assume !(0 != test_~tmp___0~0); 14#L720-1true test_~tmp___2~0 := test_#t~nondet56;havoc test_#t~nondet56; 66#L730true assume 0 != test_~tmp___2~0; 42#L736-1true havoc __utac_acc__Specification5_spec__2_#t~ret58;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 46#L634true __utac_acc__Specification5_spec__2_#t~ret58 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret58;havoc __utac_acc__Specification5_spec__2_#t~ret58; 61#L774true assume !(0 != ~pumpRunning~0); 43#L575true assume 0 != ~systemActive~0; 30#L582true havoc __utac_acc__Specification5_spec__3_#t~ret59, __utac_acc__Specification5_spec__3_#t~ret60, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~1;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~1;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 25#L882true __utac_acc__Specification5_spec__3_#t~ret59 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret59;havoc __utac_acc__Specification5_spec__3_#t~ret59; 59#L785true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 63#L785-1true 
[2019-10-22 09:03:07,161 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-22 09:03:07,162 INFO  L82        PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times
[2019-10-22 09:03:07,170 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-22 09:03:07,170 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093407621]
[2019-10-22 09:03:07,171 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:07,171 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:07,171 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-22 09:03:07,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-22 09:03:08,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-22 09:03:08,093 INFO  L168   tionRefinementEngine]: Strategy CAMEL found a feasible trace
[2019-10-22 09:03:08,095 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-22 09:03:08,095 INFO  L82        PathProgramCache]: Analyzing trace with hash -242843208, now seen corresponding path program 1 times
[2019-10-22 09:03:08,095 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-22 09:03:08,095 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524953975]
[2019-10-22 09:03:08,096 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:08,096 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:08,096 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-22 09:03:08,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-22 09:03:08,123 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-22 09:03:08,133 INFO  L168   tionRefinementEngine]: Strategy CAMEL found a feasible trace
[2019-10-22 09:03:08,136 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-22 09:03:08,137 INFO  L82        PathProgramCache]: Analyzing trace with hash 1691182002, now seen corresponding path program 1 times
[2019-10-22 09:03:08,137 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-22 09:03:08,137 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287281014]
[2019-10-22 09:03:08,137 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:08,138 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:08,138 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-22 09:03:08,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-22 09:03:08,251 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 09:03:08,251 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287281014]
[2019-10-22 09:03:08,252 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-22 09:03:08,252 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-22 09:03:08,252 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541848502]
[2019-10-22 09:03:08,356 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-22 09:03:08,372 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-22 09:03:08,373 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-22 09:03:08,375 INFO  L87              Difference]: Start difference. First operand 65 states. Second operand 5 states.
[2019-10-22 09:03:08,623 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-22 09:03:08,624 INFO  L93              Difference]: Finished difference Result 170 states and 230 transitions.
[2019-10-22 09:03:08,625 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-22 09:03:08,627 INFO  L82        GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 230 transitions.
[2019-10-22 09:03:08,640 INFO  L131   ngComponentsAnalysis]: Automaton has 4 accepting balls. 75
[2019-10-22 09:03:08,652 INFO  L88        GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 152 states and 212 transitions.
[2019-10-22 09:03:08,654 INFO  L87         BuchiClosureNwa]: Accepting states before buchiClosure: 152
[2019-10-22 09:03:08,655 INFO  L106        BuchiClosureNwa]: Accepting states after buchiClosure: 152
[2019-10-22 09:03:08,655 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 152 states and 212 transitions.
[2019-10-22 09:03:08,656 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2019-10-22 09:03:08,657 INFO  L688         BuchiCegarLoop]: Abstraction has 152 states and 212 transitions.
[2019-10-22 09:03:08,677 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 152 states and 212 transitions.
[2019-10-22 09:03:08,700 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 109.
[2019-10-22 09:03:08,701 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 109 states.
[2019-10-22 09:03:08,702 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions.
[2019-10-22 09:03:08,703 INFO  L711         BuchiCegarLoop]: Abstraction has 109 states and 148 transitions.
[2019-10-22 09:03:08,704 INFO  L591         BuchiCegarLoop]: Abstraction has 109 states and 148 transitions.
[2019-10-22 09:03:08,704 INFO  L424         BuchiCegarLoop]: ======== Iteration 2============
[2019-10-22 09:03:08,704 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 148 transitions.
[2019-10-22 09:03:08,706 INFO  L131   ngComponentsAnalysis]: Automaton has 4 accepting balls. 75
[2019-10-22 09:03:08,706 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2019-10-22 09:03:08,707 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2019-10-22 09:03:08,707 INFO  L849         BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1]
[2019-10-22 09:03:08,707 INFO  L850         BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-22 09:03:08,708 INFO  L791   eck$LassoCheckResult]: Stem: 279#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~head~0.base, ~head~0.offset := 0, 0;call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(30);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(9);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(21);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(30);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(21);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(25);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(13);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(110, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string43.base, #t~string43.offset, 1);call write~init~int(102, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(102, #t~string43.base, 2 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 3 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(80, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(117, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(109, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(112, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string47.base, #t~string47.offset, 1);call write~init~int(110, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 2 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 3 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(32, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 2 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string53.base, #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 1 + #t~string53.offset, 1);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string64.base, #t~string64.offset, 1);call write~init~int(77, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(101, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(116, #t~string64.base, 3 + #t~string64.offset, 1);call write~init~int(104, #t~string64.base, 4 + #t~string64.offset, 1);call write~init~int(58, #t~string64.base, 5 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 6 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string66.base, #t~string66.offset, 1);call write~init~int(82, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(73, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(84, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 4 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(75, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string70.base, #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 1 + #t~string70.offset, 1); 259#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 260#L543 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 324#L551 main_#t~ret35 := valid_product_#res;main_~tmp~3 := main_#t~ret35;havoc main_#t~ret35; 328#L507 assume 0 != main_~tmp~3; 326#L478 ~switchedOnBeforeTS~0 := 0; 267#L764 havoc test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 258#L785-1 
[2019-10-22 09:03:08,708 INFO  L793   eck$LassoCheckResult]: Loop: 258#L785-1 assume !false; 327#L701 assume test_~splverifierCounter~0 < 4; 263#L702 test_~tmp~4 := test_#t~nondet54;havoc test_#t~nondet54; 264#L710 assume !(0 != test_~tmp~4); 288#L710-1 test_~tmp___0~0 := test_#t~nondet55;havoc test_#t~nondet55; 268#L720 assume !(0 != test_~tmp___0~0); 270#L720-1 test_~tmp___2~0 := test_#t~nondet56;havoc test_#t~nondet56; 331#L730 assume 0 != test_~tmp___2~0; 304#L736-1 havoc __utac_acc__Specification5_spec__2_#t~ret58;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 357#L634 __utac_acc__Specification5_spec__2_#t~ret58 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret58;havoc __utac_acc__Specification5_spec__2_#t~ret58; 330#L774 assume !(0 != ~pumpRunning~0); 311#L575 assume 0 != ~systemActive~0; 289#L582 havoc __utac_acc__Specification5_spec__3_#t~ret59, __utac_acc__Specification5_spec__3_#t~ret60, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~1;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~1;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 281#L882 __utac_acc__Specification5_spec__3_#t~ret59 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret59;havoc __utac_acc__Specification5_spec__3_#t~ret59; 282#L785 assume 2 != __utac_acc__Specification5_spec__3_~tmp~5;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 329#L634-1 __utac_acc__Specification5_spec__3_#t~ret60 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~1 := __utac_acc__Specification5_spec__3_#t~ret60;havoc __utac_acc__Specification5_spec__3_#t~ret60; 256#L789 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~1); 258#L785-1 
[2019-10-22 09:03:08,708 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-22 09:03:08,709 INFO  L82        PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times
[2019-10-22 09:03:08,709 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-22 09:03:08,709 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227969816]
[2019-10-22 09:03:08,709 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:08,710 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:08,710 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-22 09:03:08,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-22 09:03:09,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-22 09:03:09,215 INFO  L168   tionRefinementEngine]: Strategy CAMEL found a feasible trace
[2019-10-22 09:03:09,215 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-22 09:03:09,215 INFO  L82        PathProgramCache]: Analyzing trace with hash -1444103597, now seen corresponding path program 1 times
[2019-10-22 09:03:09,216 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-22 09:03:09,216 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201138776]
[2019-10-22 09:03:09,216 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:09,216 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:09,216 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-22 09:03:09,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-22 09:03:09,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-22 09:03:09,229 INFO  L168   tionRefinementEngine]: Strategy CAMEL found a feasible trace
[2019-10-22 09:03:09,229 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-22 09:03:09,230 INFO  L82        PathProgramCache]: Analyzing trace with hash 1728251341, now seen corresponding path program 1 times
[2019-10-22 09:03:09,230 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-22 09:03:09,230 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702636276]
[2019-10-22 09:03:09,230 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:09,230 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-22 09:03:09,231 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-22 09:03:09,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-22 09:03:09,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-22 09:03:09,609 INFO  L168   tionRefinementEngine]: Strategy CAMEL found a feasible trace
[2019-10-22 09:03:32,493 WARN  L191               SmtUtils]: Spent 22.73 s on a formula simplification. DAG size of input: 455 DAG size of output: 453
[2019-10-22 09:03:41,456 WARN  L191               SmtUtils]: Spent 8.95 s on a formula simplification that was a NOOP. DAG size: 451
[2019-10-22 09:03:41,508 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:03:41 BoogieIcfgContainer
[2019-10-22 09:03:41,508 INFO  L132        PluginConnector]: ------------------------ END BuchiAutomizer----------------------------
[2019-10-22 09:03:41,508 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2019-10-22 09:03:41,509 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2019-10-22 09:03:41,509 INFO  L275        PluginConnector]: Witness Printer initialized
[2019-10-22 09:03:41,509 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:03:07" (3/4) ...
[2019-10-22 09:03:41,512 INFO  L134         WitnessPrinter]: Generating witness for non-termination counterexample
[2019-10-22 09:03:41,563 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_825ea728-0b52-4768-b16c-08987e3a9118/bin/uautomizer/witness.graphml
[2019-10-22 09:03:41,563 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2019-10-22 09:03:41,564 INFO  L168              Benchmark]: Toolchain (without parser) took 35866.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 212.3 MB). Free memory was 941.0 MB in the beginning and 1.0 GB in the end (delta: -104.5 MB). Peak memory consumption was 107.8 MB. Max. memory is 11.5 GB.
[2019-10-22 09:03:41,565 INFO  L168              Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2019-10-22 09:03:41,566 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 521.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 935.6 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB.
[2019-10-22 09:03:41,566 INFO  L168              Benchmark]: Boogie Procedure Inliner took 68.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
[2019-10-22 09:03:41,566 INFO  L168              Benchmark]: Boogie Preprocessor took 37.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB.
[2019-10-22 09:03:41,567 INFO  L168              Benchmark]: RCFGBuilder took 706.22 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: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB.
[2019-10-22 09:03:41,571 INFO  L168              Benchmark]: BuchiAutomizer took 34474.15 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.4 MB). Peak memory consumption was 294.7 MB. Max. memory is 11.5 GB.
[2019-10-22 09:03:41,571 INFO  L168              Benchmark]: Witness Printer took 54.79 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: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 11.5 GB.
[2019-10-22 09:03:41,573 INFO  L335   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * CACSL2BoogieTranslator took 521.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 935.6 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB.
 * Boogie Procedure Inliner took 68.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
 * Boogie Preprocessor took 37.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB.
 * RCFGBuilder took 706.22 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: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB.
 * BuchiAutomizer took 34474.15 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.4 MB). Peak memory consumption was 294.7 MB. Max. memory is 11.5 GB.
 * Witness Printer took 54.79 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: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 11.5 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 5 locations. The remainder module has 109 locations.
  - StatisticsResult: Timing statistics
    BüchiAutomizer plugin needed 34.4s and 2 iterations.  TraceHistogramMax:1. Analysis of lassos took 33.9s. 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 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 43 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 109 states and ocurred in iteration 1.	Nontrivial modules had stage [0, 0, 0, 0, 0].	InterpolantCoveringCapabilityFinite: 0/0	InterpolantCoveringCapabilityBuchi: 0/0	HoareTripleCheckerStatistics: 132 SDtfs, 239 SDslu, 247 SDs, 0 SdLazy, 67 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time	LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0	LassoNonterminationAnalysisSatUnbounded: 0	LassoNonterminationAnalysisUnsat: 0	LassoNonterminationAnalysisUnknown: 0	LassoNonterminationAnalysisTime: 0.0s	
  - TerminationAnalysisResult: Nontermination possible
    Buchi Automizer proved that your program is nonterminating for some inputs
  - FixpointNonTerminationResult [Line: 700]: Nontermination argument in form of an infinite program execution.
    Nontermination argument in form of an infinite execution
State at position 0 is
{NULL=9247}
State at position 1 is
{NULL=0, NULL=0, NULL=0, NULL=0, NULL=9247, retValue_acc=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@674fb17a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@257031d9=0, NULL=-23, methaneLevelCritical=0, tmp=0, tmp=1, NULL=-13, NULL=0, NULL=0, NULL=-21, tmp___1=0, NULL=-14, NULL=-19, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7193e7bc=0, NULL=-12, NULL=-17, NULL=-1, cleanupTimeShifts=4, switchedOnBeforeTS=0, NULL=-11, NULL=9246, \result=0, NULL=-5, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=0, NULL=0, NULL=-8, tmp___0=0, NULL=0, \result=1, NULL=-2, head=0, pumpRunning=0, NULL=-9, \result=0, tmp___0=0, NULL=-20, tmp=1, NULL=0, NULL=-18, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=-6, retValue_acc=1, tmp___2=60, NULL=-4, splverifierCounter=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51a84298=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a7b8f5b=0, NULL=4919, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d03df=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32a63c46=60, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67ab6e6a=0, head=0, NULL=0, NULL=-22, NULL=-15, NULL=0, NULL=-7, NULL=0, NULL=0, NULL=0, NULL=-3, NULL=-16, retValue_acc=0, NULL=-10}
  - StatisticsResult: NonterminationArgumentStatistics
    Fixpoint
  - NonterminatingLassoResult [Line: 1]: Nonterminating execution
    Found a nonterminating execution for the following lasso shaped sequence of statements.
Stem:
[L218]             static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L415]             int cleanupTimeShifts  =    4;
[L563]             int pumpRunning  =    0;
[L564]             int systemActive  =    1;
[L758]             int switchedOnBeforeTS  ;
[L807]             int waterLevel  =    1;
[L808]             int methaneLevelCritical  =    0;
[L498]             int retValue_acc ;
[L499]             int tmp ;
[L547]             int retValue_acc ;
[L550]             retValue_acc = 1
[L551]             return (retValue_acc);
[L505]             tmp = valid_product()
[L507]  COND TRUE  \read(tmp)
[L763]             switchedOnBeforeTS = 0
[L691]             int splverifierCounter ;
[L692]             int tmp ;
[L693]             int tmp___0 ;
[L694]             int tmp___1 ;
[L695]             int tmp___2 ;
[L698]             splverifierCounter = 0
Loop:
[L700]  COND TRUE   1
[L702]  COND TRUE   splverifierCounter < 4
[L708]              tmp = __VERIFIER_nondet_int()
[L710]  COND FALSE  !(\read(tmp))
[L718]              tmp___0 = __VERIFIER_nondet_int()
[L720]  COND FALSE  !(\read(tmp___0))
[L728]              tmp___2 = __VERIFIER_nondet_int()
[L730]  COND TRUE   \read(tmp___2)
[L630]              int retValue_acc ;
[L633]              retValue_acc = pumpRunning
[L634]              return (retValue_acc);
[L772]              switchedOnBeforeTS = isPumpRunning()
[L575]  COND FALSE  !(\read(pumpRunning))
[L582]  COND TRUE   \read(systemActive)
[L778]              int tmp ;
[L779]              int tmp___0 ;
[L878]              int retValue_acc ;
[L881]              retValue_acc = waterLevel
[L882]              return (retValue_acc);
[L783]              tmp = getWaterLevel()
[L785]  COND TRUE   tmp != 2
[L630]              int retValue_acc ;
[L633]              retValue_acc = pumpRunning
[L634]              return (retValue_acc);
[L787]              tmp___0 = isPumpRunning()
[L789]  COND FALSE  !(\read(tmp___0))
End of lasso representation.
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...