./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product27_true-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product27_true-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/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 9c8016f452608c4941fa660b03ce7c0101dbbdf8 ............................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.23-5842f4b [2018-11-18 14:58:19,159 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:58:19,160 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:58:19,168 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:58:19,169 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:58:19,169 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:58:19,170 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:58:19,171 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:58:19,172 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:58:19,173 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:58:19,174 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:58:19,174 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:58:19,174 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:58:19,175 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:58:19,176 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:58:19,176 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:58:19,177 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:58:19,178 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:58:19,179 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:58:19,180 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:58:19,181 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:58:19,182 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:58:19,183 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:58:19,184 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:58:19,184 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:58:19,184 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:58:19,185 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:58:19,186 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:58:19,186 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:58:19,187 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:58:19,187 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:58:19,187 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:58:19,188 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:58:19,188 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:58:19,188 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:58:19,189 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:58:19,189 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 14:58:19,199 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:58:19,200 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:58:19,200 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:58:19,201 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:58:19,201 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:58:19,201 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 14:58:19,201 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 14:58:19,201 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 14:58:19,201 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 14:58:19,201 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 14:58:19,202 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 14:58:19,202 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:58:19,202 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:58:19,202 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 14:58:19,202 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:58:19,202 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:58:19,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:58:19,203 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 14:58:19,203 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 14:58:19,203 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 14:58:19,203 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:58:19,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:58:19,203 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 14:58:19,204 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:58:19,204 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 14:58:19,204 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:58:19,204 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:58:19,204 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 14:58:19,204 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:58:19,204 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 14:58:19,205 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 14:58:19,205 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 14:58:19,205 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/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 -> 9c8016f452608c4941fa660b03ce7c0101dbbdf8 [2018-11-18 14:58:19,228 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:58:19,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:58:19,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:58:19,241 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:58:19,241 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:58:19,242 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec2_product27_true-unreach-call_false-termination.cil.c [2018-11-18 14:58:19,285 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/uautomizer/data/f81058976/7dfce3b1a0df4a759cf83298451a997f/FLAG7b541c70e [2018-11-18 14:58:19,622 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:58:19,623 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/sv-benchmarks/c/product-lines/minepump_spec2_product27_true-unreach-call_false-termination.cil.c [2018-11-18 14:58:19,631 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/uautomizer/data/f81058976/7dfce3b1a0df4a759cf83298451a997f/FLAG7b541c70e [2018-11-18 14:58:19,641 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/uautomizer/data/f81058976/7dfce3b1a0df4a759cf83298451a997f [2018-11-18 14:58:19,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:58:19,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 14:58:19,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:58:19,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:58:19,646 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:58:19,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:58:19" (1/1) ... [2018-11-18 14:58:19,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c3b532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19, skipping insertion in model container [2018-11-18 14:58:19,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:58:19" (1/1) ... [2018-11-18 14:58:19,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:58:19,683 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:58:19,873 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:58:19,883 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:58:19,981 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:58:19,997 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:58:19,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19 WrapperNode [2018-11-18 14:58:19,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:58:19,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 14:58:19,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 14:58:19,998 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 14:58:20,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19" (1/1) ... [2018-11-18 14:58:20,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19" (1/1) ... [2018-11-18 14:58:20,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 14:58:20,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:58:20,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:58:20,043 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:58:20,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19" (1/1) ... [2018-11-18 14:58:20,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19" (1/1) ... [2018-11-18 14:58:20,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19" (1/1) ... [2018-11-18 14:58:20,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19" (1/1) ... [2018-11-18 14:58:20,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19" (1/1) ... [2018-11-18 14:58:20,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19" (1/1) ... [2018-11-18 14:58:20,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19" (1/1) ... [2018-11-18 14:58:20,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:58:20,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:58:20,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:58:20,067 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:58:20,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/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 [2018-11-18 14:58:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 14:58:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:58:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:58:20,609 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:58:20,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:58:20 BoogieIcfgContainer [2018-11-18 14:58:20,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:58:20,611 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 14:58:20,611 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 14:58:20,614 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 14:58:20,615 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 14:58:20,615 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 02:58:19" (1/3) ... [2018-11-18 14:58:20,616 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f324865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 02:58:20, skipping insertion in model container [2018-11-18 14:58:20,616 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 14:58:20,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:58:19" (2/3) ... [2018-11-18 14:58:20,616 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f324865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 02:58:20, skipping insertion in model container [2018-11-18 14:58:20,617 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 14:58:20,617 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:58:20" (3/3) ... [2018-11-18 14:58:20,618 INFO L375 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product27_true-unreach-call_false-termination.cil.c [2018-11-18 14:58:20,661 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:58:20,662 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 14:58:20,662 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 14:58:20,662 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 14:58:20,662 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:58:20,662 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:58:20,662 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 14:58:20,662 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:58:20,663 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 14:58:20,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 112 states. [2018-11-18 14:58:20,699 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 72 [2018-11-18 14:58:20,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:58:20,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:58:20,706 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:58:20,706 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:58:20,706 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 14:58:20,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 112 states. [2018-11-18 14:58:20,711 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 72 [2018-11-18 14:58:20,711 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:58:20,712 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:58:20,712 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:58:20,712 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:58:20,716 INFO L794 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];call #t~string18.base, #t~string18.offset := #Ultimate.alloc(30);call #t~string19.base, #t~string19.offset := #Ultimate.alloc(9);call #t~string20.base, #t~string20.offset := #Ultimate.alloc(21);call #t~string21.base, #t~string21.offset := #Ultimate.alloc(30);call #t~string22.base, #t~string22.offset := #Ultimate.alloc(9);call #t~string23.base, #t~string23.offset := #Ultimate.alloc(21);call #t~string27.base, #t~string27.offset := #Ultimate.alloc(30);call #t~string28.base, #t~string28.offset := #Ultimate.alloc(9);call #t~string29.base, #t~string29.offset := #Ultimate.alloc(25);call #t~string30.base, #t~string30.offset := #Ultimate.alloc(30);call #t~string31.base, #t~string31.offset := #Ultimate.alloc(9);call #t~string32.base, #t~string32.offset := #Ultimate.alloc(25);call #t~string38.base, #t~string38.offset := #Ultimate.alloc(13);call #t~string40.base, #t~string40.offset := #Ultimate.alloc(7);#memory_int := #memory_int[#t~string40.base,#t~string40.offset := 44];#memory_int := #memory_int[#t~string40.base,1 + #t~string40.offset := 77];#memory_int := #memory_int[#t~string40.base,2 + #t~string40.offset := 101];#memory_int := #memory_int[#t~string40.base,3 + #t~string40.offset := 116];#memory_int := #memory_int[#t~string40.base,4 + #t~string40.offset := 104];#memory_int := #memory_int[#t~string40.base,5 + #t~string40.offset := 58];#memory_int := #memory_int[#t~string40.base,6 + #t~string40.offset := 0];call #t~string42.base, #t~string42.offset := #Ultimate.alloc(5);#memory_int := #memory_int[#t~string42.base,#t~string42.offset := 67];#memory_int := #memory_int[#t~string42.base,1 + #t~string42.offset := 82];#memory_int := #memory_int[#t~string42.base,2 + #t~string42.offset := 73];#memory_int := #memory_int[#t~string42.base,3 + #t~string42.offset := 84];#memory_int := #memory_int[#t~string42.base,4 + #t~string42.offset := 0];call #t~string44.base, #t~string44.offset := #Ultimate.alloc(3);#memory_int := #memory_int[#t~string44.base,#t~string44.offset := 79];#memory_int := #memory_int[#t~string44.base,1 + #t~string44.offset := 75];#memory_int := #memory_int[#t~string44.base,2 + #t~string44.offset := 0];call #t~string46.base, #t~string46.offset := #Ultimate.alloc(2);#memory_int := #memory_int[#t~string46.base,#t~string46.offset := 41];#memory_int := #memory_int[#t~string46.base,1 + #t~string46.offset := 0];call #t~string57.base, #t~string57.offset := #Ultimate.alloc(13);call #t~string59.base, #t~string59.offset := #Ultimate.alloc(3);#memory_int := #memory_int[#t~string59.base,#t~string59.offset := 79];#memory_int := #memory_int[#t~string59.base,1 + #t~string59.offset := 110];#memory_int := #memory_int[#t~string59.base,2 + #t~string59.offset := 0];call #t~string61.base, #t~string61.offset := #Ultimate.alloc(4);#memory_int := #memory_int[#t~string61.base,#t~string61.offset := 79];#memory_int := #memory_int[#t~string61.base,1 + #t~string61.offset := 102];#memory_int := #memory_int[#t~string61.base,2 + #t~string61.offset := 102];#memory_int := #memory_int[#t~string61.base,3 + #t~string61.offset := 0];call #t~string63.base, #t~string63.offset := #Ultimate.alloc(7);#memory_int := #memory_int[#t~string63.base,#t~string63.offset := 44];#memory_int := #memory_int[#t~string63.base,1 + #t~string63.offset := 80];#memory_int := #memory_int[#t~string63.base,2 + #t~string63.offset := 117];#memory_int := #memory_int[#t~string63.base,3 + #t~string63.offset := 109];#memory_int := #memory_int[#t~string63.base,4 + #t~string63.offset := 112];#memory_int := #memory_int[#t~string63.base,5 + #t~string63.offset := 58];#memory_int := #memory_int[#t~string63.base,6 + #t~string63.offset := 0];call #t~string65.base, #t~string65.offset := #Ultimate.alloc(3);#memory_int := #memory_int[#t~string65.base,#t~string65.offset := 79];#memory_int := #memory_int[#t~string65.base,1 + #t~string65.offset := 110];#memory_int := #memory_int[#t~string65.base,2 + #t~string65.offset := 0];call #t~string67.base, #t~string67.offset := #Ultimate.alloc(4);#memory_int := #memory_int[#t~string67.base,#t~string67.offset := 79];#memory_int := #memory_int[#t~string67.base,1 + #t~string67.offset := 102];#memory_int := #memory_int[#t~string67.base,2 + #t~string67.offset := 102];#memory_int := #memory_int[#t~string67.base,3 + #t~string67.offset := 0];call #t~string69.base, #t~string69.offset := #Ultimate.alloc(3);#memory_int := #memory_int[#t~string69.base,#t~string69.offset := 41];#memory_int := #memory_int[#t~string69.base,1 + #t~string69.offset := 32];#memory_int := #memory_int[#t~string69.base,2 + #t~string69.offset := 0];call #t~string71.base, #t~string71.offset := #Ultimate.alloc(2);#memory_int := #memory_int[#t~string71.base,#t~string71.offset := 10];#memory_int := #memory_int[#t~string71.base,1 + #t~string71.offset := 0];~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~6, main_~tmp~4;havoc main_~retValue_acc~6;havoc main_~tmp~4;assume { :begin_inline_select_helpers } true; 40#L736true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 83#L729true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 41#L744true main_#t~ret47 := valid_product_#res;assume { :end_inline_valid_product } true;main_~tmp~4 := main_#t~ret47;havoc main_#t~ret47; 5#L632true assume 0 != main_~tmp~4;assume { :begin_inline_setup } true; 33#L604true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 106#L415true assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet48, test_#t~nondet49, test_#t~nondet50, test_#t~nondet51, 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; 103#L657-3true [2018-11-18 14:58:20,717 INFO L796 eck$LassoCheckResult]: Loop: 103#L657-3true assume true; 113#L657-1true assume !false; 62#L658true assume test_~splverifierCounter~0 < 4; 32#L659true test_~tmp~5 := test_#t~nondet48;havoc test_#t~nondet48; 42#L667true assume !(0 != test_~tmp~5); 38#L667-2true test_~tmp___0~1 := test_#t~nondet49;havoc test_#t~nondet49; 80#L677true assume !(0 != test_~tmp___0~1); 69#L677-2true test_~tmp___2~0 := test_#t~nondet50;havoc test_#t~nondet50; 18#L687true assume 0 != test_~tmp___2~0; 93#L693-2true assume { :begin_inline_timeShift } true; 39#L758true assume !(0 != ~pumpRunning~0); 30#L758-2true assume !(0 != ~systemActive~0); 78#L765-1true assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret35, __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_~tmp~3, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~3;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 14#L497true __utac_acc__Specification2_spec__2_#t~ret35 := isMethaneLevelCritical_#res;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~3 := __utac_acc__Specification2_spec__2_#t~ret35;havoc __utac_acc__Specification2_spec__2_#t~ret35; 105#L426true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~3);~methAndRunningLastTime~0 := 0; 91#L426-1true assume { :end_inline___utac_acc__Specification2_spec__2 } true; 13#L775true assume { :end_inline_timeShift } true; 103#L657-3true [2018-11-18 14:58:20,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:58:20,722 INFO L82 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2018-11-18 14:58:20,723 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:58:20,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:58:20,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:20,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:58:20,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:58:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:58:20,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:58:20,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2106204507, now seen corresponding path program 1 times [2018-11-18 14:58:20,883 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:58:20,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:58:20,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:20,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:58:20,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:58:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:58:20,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:58:20,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1370262930, now seen corresponding path program 1 times [2018-11-18 14:58:20,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:58:20,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:58:20,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:20,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:58:20,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:58:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:58:21,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:58:21,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 14:58:21,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 14:58:21,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:58:21,104 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 6 states. [2018-11-18 14:58:21,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:58:21,312 INFO L93 Difference]: Finished difference Result 279 states and 360 transitions. [2018-11-18 14:58:21,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 14:58:21,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 279 states and 360 transitions. [2018-11-18 14:58:21,323 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 179 [2018-11-18 14:58:21,329 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 279 states to 249 states and 330 transitions. [2018-11-18 14:58:21,330 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 249 [2018-11-18 14:58:21,331 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 249 [2018-11-18 14:58:21,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 249 states and 330 transitions. [2018-11-18 14:58:21,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 14:58:21,333 INFO L705 BuchiCegarLoop]: Abstraction has 249 states and 330 transitions. [2018-11-18 14:58:21,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states and 330 transitions. [2018-11-18 14:58:21,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 156. [2018-11-18 14:58:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-11-18 14:58:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 207 transitions. [2018-11-18 14:58:21,364 INFO L728 BuchiCegarLoop]: Abstraction has 156 states and 207 transitions. [2018-11-18 14:58:21,364 INFO L608 BuchiCegarLoop]: Abstraction has 156 states and 207 transitions. [2018-11-18 14:58:21,364 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 14:58:21,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 156 states and 207 transitions. [2018-11-18 14:58:21,366 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 112 [2018-11-18 14:58:21,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:58:21,367 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:58:21,367 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:58:21,367 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:58:21,368 INFO L794 eck$LassoCheckResult]: Stem: 496#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];call #t~string18.base, #t~string18.offset := #Ultimate.alloc(30);call #t~string19.base, #t~string19.offset := #Ultimate.alloc(9);call #t~string20.base, #t~string20.offset := #Ultimate.alloc(21);call #t~string21.base, #t~string21.offset := #Ultimate.alloc(30);call #t~string22.base, #t~string22.offset := #Ultimate.alloc(9);call #t~string23.base, #t~string23.offset := #Ultimate.alloc(21);call #t~string27.base, #t~string27.offset := #Ultimate.alloc(30);call #t~string28.base, #t~string28.offset := #Ultimate.alloc(9);call #t~string29.base, #t~string29.offset := #Ultimate.alloc(25);call #t~string30.base, #t~string30.offset := #Ultimate.alloc(30);call #t~string31.base, #t~string31.offset := #Ultimate.alloc(9);call #t~string32.base, #t~string32.offset := #Ultimate.alloc(25);call #t~string38.base, #t~string38.offset := #Ultimate.alloc(13);call #t~string40.base, #t~string40.offset := #Ultimate.alloc(7);#memory_int := #memory_int[#t~string40.base,#t~string40.offset := 44];#memory_int := #memory_int[#t~string40.base,1 + #t~string40.offset := 77];#memory_int := #memory_int[#t~string40.base,2 + #t~string40.offset := 101];#memory_int := #memory_int[#t~string40.base,3 + #t~string40.offset := 116];#memory_int := #memory_int[#t~string40.base,4 + #t~string40.offset := 104];#memory_int := #memory_int[#t~string40.base,5 + #t~string40.offset := 58];#memory_int := #memory_int[#t~string40.base,6 + #t~string40.offset := 0];call #t~string42.base, #t~string42.offset := #Ultimate.alloc(5);#memory_int := #memory_int[#t~string42.base,#t~string42.offset := 67];#memory_int := #memory_int[#t~string42.base,1 + #t~string42.offset := 82];#memory_int := #memory_int[#t~string42.base,2 + #t~string42.offset := 73];#memory_int := #memory_int[#t~string42.base,3 + #t~string42.offset := 84];#memory_int := #memory_int[#t~string42.base,4 + #t~string42.offset := 0];call #t~string44.base, #t~string44.offset := #Ultimate.alloc(3);#memory_int := #memory_int[#t~string44.base,#t~string44.offset := 79];#memory_int := #memory_int[#t~string44.base,1 + #t~string44.offset := 75];#memory_int := #memory_int[#t~string44.base,2 + #t~string44.offset := 0];call #t~string46.base, #t~string46.offset := #Ultimate.alloc(2);#memory_int := #memory_int[#t~string46.base,#t~string46.offset := 41];#memory_int := #memory_int[#t~string46.base,1 + #t~string46.offset := 0];call #t~string57.base, #t~string57.offset := #Ultimate.alloc(13);call #t~string59.base, #t~string59.offset := #Ultimate.alloc(3);#memory_int := #memory_int[#t~string59.base,#t~string59.offset := 79];#memory_int := #memory_int[#t~string59.base,1 + #t~string59.offset := 110];#memory_int := #memory_int[#t~string59.base,2 + #t~string59.offset := 0];call #t~string61.base, #t~string61.offset := #Ultimate.alloc(4);#memory_int := #memory_int[#t~string61.base,#t~string61.offset := 79];#memory_int := #memory_int[#t~string61.base,1 + #t~string61.offset := 102];#memory_int := #memory_int[#t~string61.base,2 + #t~string61.offset := 102];#memory_int := #memory_int[#t~string61.base,3 + #t~string61.offset := 0];call #t~string63.base, #t~string63.offset := #Ultimate.alloc(7);#memory_int := #memory_int[#t~string63.base,#t~string63.offset := 44];#memory_int := #memory_int[#t~string63.base,1 + #t~string63.offset := 80];#memory_int := #memory_int[#t~string63.base,2 + #t~string63.offset := 117];#memory_int := #memory_int[#t~string63.base,3 + #t~string63.offset := 109];#memory_int := #memory_int[#t~string63.base,4 + #t~string63.offset := 112];#memory_int := #memory_int[#t~string63.base,5 + #t~string63.offset := 58];#memory_int := #memory_int[#t~string63.base,6 + #t~string63.offset := 0];call #t~string65.base, #t~string65.offset := #Ultimate.alloc(3);#memory_int := #memory_int[#t~string65.base,#t~string65.offset := 79];#memory_int := #memory_int[#t~string65.base,1 + #t~string65.offset := 110];#memory_int := #memory_int[#t~string65.base,2 + #t~string65.offset := 0];call #t~string67.base, #t~string67.offset := #Ultimate.alloc(4);#memory_int := #memory_int[#t~string67.base,#t~string67.offset := 79];#memory_int := #memory_int[#t~string67.base,1 + #t~string67.offset := 102];#memory_int := #memory_int[#t~string67.base,2 + #t~string67.offset := 102];#memory_int := #memory_int[#t~string67.base,3 + #t~string67.offset := 0];call #t~string69.base, #t~string69.offset := #Ultimate.alloc(3);#memory_int := #memory_int[#t~string69.base,#t~string69.offset := 41];#memory_int := #memory_int[#t~string69.base,1 + #t~string69.offset := 32];#memory_int := #memory_int[#t~string69.base,2 + #t~string69.offset := 0];call #t~string71.base, #t~string71.offset := #Ultimate.alloc(2);#memory_int := #memory_int[#t~string71.base,#t~string71.offset := 10];#memory_int := #memory_int[#t~string71.base,1 + #t~string71.offset := 0];~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 422#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~6, main_~tmp~4;havoc main_~retValue_acc~6;havoc main_~tmp~4;assume { :begin_inline_select_helpers } true; 423#L736 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 472#L729 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 473#L744 main_#t~ret47 := valid_product_#res;assume { :end_inline_valid_product } true;main_~tmp~4 := main_#t~ret47;havoc main_#t~ret47; 413#L632 assume 0 != main_~tmp~4;assume { :begin_inline_setup } true; 414#L604 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 461#L415 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet48, test_#t~nondet49, test_#t~nondet50, test_#t~nondet51, 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; 428#L657-3 [2018-11-18 14:58:21,368 INFO L796 eck$LassoCheckResult]: Loop: 428#L657-3 assume true; 506#L657-1 assume !false; 491#L658 assume test_~splverifierCounter~0 < 4; 456#L659 test_~tmp~5 := test_#t~nondet48;havoc test_#t~nondet48; 457#L667 assume !(0 != test_~tmp~5); 453#L667-2 test_~tmp___0~1 := test_#t~nondet49;havoc test_#t~nondet49; 469#L677 assume !(0 != test_~tmp___0~1); 494#L677-2 test_~tmp___2~0 := test_#t~nondet50;havoc test_#t~nondet50; 436#L687 assume 0 != test_~tmp___2~0; 437#L693-2 assume { :begin_inline_timeShift } true; 470#L758 assume !(0 != ~pumpRunning~0); 454#L758-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret53, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 455#L790 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 485#L782-1 assume { :end_inline_processEnvironment__wrappee__base } true; 483#L790-1 assume { :end_inline_processEnvironment } true; 495#L765-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret35, __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_~tmp~3, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~3;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 429#L497 __utac_acc__Specification2_spec__2_#t~ret35 := isMethaneLevelCritical_#res;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~3 := __utac_acc__Specification2_spec__2_#t~ret35;havoc __utac_acc__Specification2_spec__2_#t~ret35; 430#L426 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~3);~methAndRunningLastTime~0 := 0; 440#L426-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 427#L775 assume { :end_inline_timeShift } true; 428#L657-3 [2018-11-18 14:58:21,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:58:21,369 INFO L82 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2018-11-18 14:58:21,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:58:21,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:58:21,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:21,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:58:21,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:58:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:58:21,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:58:21,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1517897382, now seen corresponding path program 1 times [2018-11-18 14:58:21,415 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:58:21,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:58:21,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:21,416 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:58:21,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:58:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:58:21,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:58:21,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1404544241, now seen corresponding path program 1 times [2018-11-18 14:58:21,425 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:58:21,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:58:21,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:21,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:58:21,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:58:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:58:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:59:01,604 WARN L180 SmtUtils]: Spent 40.00 s on a formula simplification. DAG size of input: 399 DAG size of output: 397 [2018-11-18 14:59:21,656 WARN L180 SmtUtils]: Spent 20.05 s on a formula simplification that was a NOOP. DAG size: 395 [2018-11-18 14:59:21,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 02:59:21 BoogieIcfgContainer [2018-11-18 14:59:21,711 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 14:59:21,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:59:21,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:59:21,712 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:59:21,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:58:20" (3/4) ... [2018-11-18 14:59:21,715 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-18 14:59:21,756 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3dc58203-416c-44bb-9e9b-2e7a78c21cac/bin-2019/uautomizer/witness.graphml [2018-11-18 14:59:21,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:59:21,757 INFO L168 Benchmark]: Toolchain (without parser) took 62113.53 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 232.8 MB). Free memory was 955.5 MB in the beginning and 857.9 MB in the end (delta: 97.6 MB). Peak memory consumption was 330.3 MB. Max. memory is 11.5 GB. [2018-11-18 14:59:21,758 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:59:21,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 955.5 MB in the beginning and 1.2 GB in the end (delta: -205.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-11-18 14:59:21,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 14:59:21,759 INFO L168 Benchmark]: Boogie Preprocessor took 24.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:59:21,759 INFO L168 Benchmark]: RCFGBuilder took 543.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:59:21,760 INFO L168 Benchmark]: BuchiAutomizer took 61100.17 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 59.2 MB). Free memory was 1.1 GB in the beginning and 863.0 MB in the end (delta: 227.7 MB). Peak memory consumption was 287.0 MB. Max. memory is 11.5 GB. [2018-11-18 14:59:21,760 INFO L168 Benchmark]: Witness Printer took 45.00 ms. Allocated memory is still 1.3 GB. Free memory was 863.0 MB in the beginning and 857.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-11-18 14:59:21,762 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 353.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 955.5 MB in the beginning and 1.2 GB in the end (delta: -205.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 543.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 61100.17 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 59.2 MB). Free memory was 1.1 GB in the beginning and 863.0 MB in the end (delta: 227.7 MB). Peak memory consumption was 287.0 MB. Max. memory is 11.5 GB. * Witness Printer took 45.00 ms. Allocated memory is still 1.3 GB. Free memory was 863.0 MB in the beginning and 857.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 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 6 locations. The remainder module has 156 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 61.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 60.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 93 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 156 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 136 SDtfs, 512 SDslu, 727 SDs, 0 SdLazy, 42 SolverSat, 9 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: 657]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3fd1d163=0, NULL=0, ",Pump:"=0, ")"=0, ")"=31, ",Meth:"=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@734ca3ae=0, "\n"=42, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f18463b=0, "OK"=0, retValue_acc=0, "Off"=0, ",Pump:"=38, "Env(Water:%i"=35, "CRIT"=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@565148fa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e0bf113=172, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15913832=0, "On"=0, ") "=0, tmp=0, "Off"=0, tmp___1=0, "__utac__get_this_argtype"=19, "__utac__get_this_arg"=23, "__utac__get_this_arg"=8, "libacc.c"=20, cleanupTimeShifts=4, "libacc.c"=16, "CRIT"=34, "__utac__get_this_arg"=0, "i > 0 && i <= this->argsCount"=0, "i > 0 && i <= this->argsCount"=0, "__utac__get_this_argtype"=0, NULL=0, systemActive=1, waterLevel=1, ") "=40, "__utac__get_this_argtype"=0, "i > 0 && i <= this->argsCount"=0, "Env(Water:%i"=0, retValue_acc=0, "OK"=33, "Pump(System:"=0, \result=1, "i > 0 && i <= this->argsCount"=14, head=0, pumpRunning=0, "Pump(System:"=27, \result=0, "i > 0 && i <= this->argsCount"=11, tmp=1, "libacc.c"=0, "i > 0 && i <= this->argsCount"=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@173a6b1c=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@751697b3=0, "Off"=39, "Off"=29, "libacc.c"=24, retValue_acc=1, "\n"=0, tmp___2=172, "i > 0 && i <= this->argsCount"=18, tmp___0=0, splverifierCounter=0, "On"=0, methAndRunningLastTime=0, \result=0, "On"=28, head=0, "libacc.c"=0, "libacc.c"=12, tmp=0, "i > 0 && i <= this->argsCount"=22, "__utac__get_this_arg"=0, "__utac__get_this_argtype"=17, "libacc.c"=0, "libacc.c"=0, ",Meth:"=26, tmp=0, "On"=36} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 657]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L337] FCALL "i > 0 && i <= this->argsCount" [L337] FCALL "libacc.c" [L338] FCALL "__utac__get_this_arg" [L344] FCALL "i > 0 && i <= this->argsCount" [L344] FCALL "libacc.c" [L345] FCALL "__utac__get_this_arg" [L383] FCALL "i > 0 && i <= this->argsCount" [L383] FCALL "libacc.c" [L384] FCALL "__utac__get_this_argtype" [L390] FCALL "i > 0 && i <= this->argsCount" [L390] FCALL "libacc.c" [L391] FCALL "__utac__get_this_argtype" [L506] FCALL "Env(Water:%i" [L507] FCALL ",Meth:" [L511] FCALL "CRIT" [L515] FCALL "OK" [L519] FCALL ")" [L870] FCALL "Pump(System:" [L874] FCALL "On" [L878] FCALL "Off" [L882] FCALL ",Pump:" [L886] FCALL "On" [L890] FCALL "Off" [L894] FCALL ") " [L896] FCALL "\n" [L409] int methAndRunningLastTime ; [L454] int waterLevel = 1; [L455] int methaneLevelCritical = 0; [L543] int cleanupTimeShifts = 4; [L751] int pumpRunning = 0; [L752] int systemActive = 1; [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L623] int retValue_acc ; [L624] int tmp ; [L628] FCALL select_helpers() [L629] FCALL select_features() [L630] CALL, EXPR valid_product() [L740] int retValue_acc ; [L743] retValue_acc = 1 [L744] RET return (retValue_acc); [L630] EXPR valid_product() [L630] tmp = valid_product() [L632] COND TRUE \read(tmp) [L634] FCALL setup() [L635] CALL runTest() [L613] CALL __utac_acc__Specification2_spec__1() [L414] RET methAndRunningLastTime = 0 [L613] __utac_acc__Specification2_spec__1() [L614] CALL test() [L648] int splverifierCounter ; [L649] int tmp ; [L650] int tmp___0 ; [L651] int tmp___1 ; [L652] int tmp___2 ; [L655] splverifierCounter = 0 Loop: [L657] COND TRUE 1 [L659] COND TRUE splverifierCounter < 4 [L665] tmp = __VERIFIER_nondet_int() [L667] COND FALSE !(\read(tmp)) [L675] tmp___0 = __VERIFIER_nondet_int() [L677] COND FALSE !(\read(tmp___0)) [L685] tmp___2 = __VERIFIER_nondet_int() [L687] COND TRUE \read(tmp___2) [L702] CALL timeShift() [L758] COND FALSE !(\read(pumpRunning)) [L765] COND TRUE \read(systemActive) [L767] CALL processEnvironment() [L787] int tmp ; [L790] COND FALSE !(\read(pumpRunning)) [L805] RET, FCALL processEnvironment__wrappee__base() [L767] processEnvironment() [L773] CALL __utac_acc__Specification2_spec__2() [L419] int tmp ; [L420] int tmp___0 ; [L424] CALL, EXPR isMethaneLevelCritical() [L493] int retValue_acc ; [L496] retValue_acc = methaneLevelCritical [L497] RET return (retValue_acc); [L424] EXPR isMethaneLevelCritical() [L424] tmp = isMethaneLevelCritical() [L426] COND FALSE !(\read(tmp)) [L442] RET methAndRunningLastTime = 0 [L773] RET __utac_acc__Specification2_spec__2() [L702] timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...