./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/signedintegeroverflow-regression/Division_false-no-overflow.c.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/signedintegeroverflow-regression/Division_false-no-overflow.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5a306c4fb589f9b20486de004bee6462f04078de ............................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 03:22:33,752 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 03:22:33,753 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 03:22:33,760 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 03:22:33,761 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 03:22:33,761 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 03:22:33,762 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 03:22:33,764 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 03:22:33,765 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 03:22:33,766 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 03:22:33,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 03:22:33,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 03:22:33,767 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 03:22:33,768 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 03:22:33,768 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 03:22:33,769 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 03:22:33,769 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 03:22:33,770 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 03:22:33,772 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 03:22:33,773 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 03:22:33,774 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 03:22:33,774 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 03:22:33,776 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 03:22:33,776 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 03:22:33,776 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 03:22:33,777 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 03:22:33,778 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 03:22:33,778 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 03:22:33,779 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 03:22:33,780 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 03:22:33,780 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 03:22:33,780 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 03:22:33,780 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 03:22:33,781 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 03:22:33,781 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 03:22:33,782 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 03:22:33,782 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2018-11-23 03:22:33,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 03:22:33,793 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 03:22:33,794 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 03:22:33,794 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-11-23 03:22:33,795 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 03:22:33,795 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 03:22:33,795 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 03:22:33,795 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 03:22:33,795 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 03:22:33,795 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 03:22:33,796 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 03:22:33,796 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 03:22:33,796 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 03:22:33,796 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 03:22:33,796 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 03:22:33,796 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 03:22:33,796 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 03:22:33,797 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-23 03:22:33,797 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-23 03:22:33,797 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 03:22:33,797 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 03:22:33,797 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-23 03:22:33,797 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 03:22:33,797 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 03:22:33,798 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 03:22:33,798 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-23 03:22:33,798 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 03:22:33,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 03:22:33,798 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak 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(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a306c4fb589f9b20486de004bee6462f04078de [2018-11-23 03:22:33,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 03:22:33,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 03:22:33,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 03:22:33,837 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 03:22:33,838 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 03:22:33,838 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/../../sv-benchmarks/c/signedintegeroverflow-regression/Division_false-no-overflow.c.i [2018-11-23 03:22:33,889 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/data/3163e17e0/315c667658d746ea9f3a9df6b003f95d/FLAG2c087f31e [2018-11-23 03:22:34,251 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 03:22:34,252 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/sv-benchmarks/c/signedintegeroverflow-regression/Division_false-no-overflow.c.i [2018-11-23 03:22:34,260 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/data/3163e17e0/315c667658d746ea9f3a9df6b003f95d/FLAG2c087f31e [2018-11-23 03:22:34,650 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/data/3163e17e0/315c667658d746ea9f3a9df6b003f95d [2018-11-23 03:22:34,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 03:22:34,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 03:22:34,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 03:22:34,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 03:22:34,660 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 03:22:34,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:34" (1/1) ... [2018-11-23 03:22:34,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d56a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34, skipping insertion in model container [2018-11-23 03:22:34,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:34" (1/1) ... [2018-11-23 03:22:34,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 03:22:34,694 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 03:22:34,870 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 03:22:34,876 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 03:22:34,905 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 03:22:34,980 INFO L195 MainTranslator]: Completed translation [2018-11-23 03:22:34,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34 WrapperNode [2018-11-23 03:22:34,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 03:22:34,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 03:22:34,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 03:22:34,981 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 03:22:34,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34" (1/1) ... [2018-11-23 03:22:34,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34" (1/1) ... [2018-11-23 03:22:35,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 03:22:35,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 03:22:35,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 03:22:35,012 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 03:22:35,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34" (1/1) ... [2018-11-23 03:22:35,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34" (1/1) ... [2018-11-23 03:22:35,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34" (1/1) ... [2018-11-23 03:22:35,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34" (1/1) ... [2018-11-23 03:22:35,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34" (1/1) ... [2018-11-23 03:22:35,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34" (1/1) ... [2018-11-23 03:22:35,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34" (1/1) ... [2018-11-23 03:22:35,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 03:22:35,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 03:22:35,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 03:22:35,028 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 03:22:35,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-23 03:22:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 03:22:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-11-23 03:22:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 03:22:35,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 03:22:35,271 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 03:22:35,272 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-23 03:22:35,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:35 BoogieIcfgContainer [2018-11-23 03:22:35,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 03:22:35,273 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-23 03:22:35,273 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-23 03:22:35,281 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-23 03:22:35,281 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:35" (1/1) ... [2018-11-23 03:22:35,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:22:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 03:22:35,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 10 states and 9 transitions. [2018-11-23 03:22:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2018-11-23 03:22:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-11-23 03:22:35,316 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 03:22:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 03:22:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 03:22:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 03:22:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 03:22:35,423 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];call #t~string29.base, #t~string29.offset := #Ultimate.alloc(4);call write~init~int(37, #t~string29.base, #t~string29.offset, 1);call write~init~int(100, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(10, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);havoc main_#res;havoc main_#t~nondet28, main_~minInt~0, main_~x~0;main_~minInt~0 := -2147483648; VAL [ULTIMATE.start_main_~minInt~0=(- 2147483648), |#NULL.base|=0, |#NULL.offset|=0, |#t~string29.base|=5, |#t~string29.offset|=0] [?] assume !((if main_~minInt~0 < 0 && 0 != main_~minInt~0 % -1 then main_~minInt~0 / -1 - 1 else main_~minInt~0 / -1) <= 2147483647); VAL [ULTIMATE.start_main_~minInt~0=(- 2147483648), |#NULL.base|=0, |#NULL.offset|=0, |#t~string29.base|=5, |#t~string29.offset|=0] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [L334] call #t~string29.base, #t~string29.offset := #Ultimate.alloc(4); [L334] call write~init~int(37, #t~string29.base, #t~string29.offset, 1); [L334] call write~init~int(100, #t~string29.base, 1 + #t~string29.offset, 1); [L334] call write~init~int(10, #t~string29.base, 2 + #t~string29.offset, 1); [L334] call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1); [?] havoc main_#res; [?] havoc main_#t~nondet28, main_~minInt~0, main_~x~0; [L332] main_~minInt~0 := -2147483648; VAL [#NULL.base=0, #NULL.offset=0, #t~string29.base=5, #t~string29.offset=0, main_~minInt~0=-2147483648] [L333] assert (if main_~minInt~0 < 0 && 0 != main_~minInt~0 % -1 then main_~minInt~0 / -1 - 1 else main_~minInt~0 / -1) <= 2147483647; VAL [#NULL.base=0, #NULL.offset=0, #t~string29.base=5, #t~string29.offset=0, main_~minInt~0=-2147483648] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [L334] call #t~string29.base, #t~string29.offset := #Ultimate.alloc(4); [L334] call write~init~int(37, #t~string29.base, #t~string29.offset, 1); [L334] call write~init~int(100, #t~string29.base, 1 + #t~string29.offset, 1); [L334] call write~init~int(10, #t~string29.base, 2 + #t~string29.offset, 1); [L334] call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1); [?] havoc main_#res; [?] havoc main_#t~nondet28, main_~minInt~0, main_~x~0; [L332] main_~minInt~0 := -2147483648; VAL [#NULL.base=0, #NULL.offset=0, #t~string29.base=5, #t~string29.offset=0, main_~minInt~0=-2147483648] [L333] assert (if main_~minInt~0 < 0 && 0 != main_~minInt~0 % -1 then main_~minInt~0 / -1 - 1 else main_~minInt~0 / -1) <= 2147483647; VAL [#NULL.base=0, #NULL.offset=0, #t~string29.base=5, #t~string29.offset=0, main_~minInt~0=-2147483648] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L334] FCALL call #t~string29 := #Ultimate.alloc(4); [L334] FCALL call write~init~int(37, { base: #t~string29!base, offset: #t~string29!offset }, 1); [L334] FCALL call write~init~int(100, { base: #t~string29!base, offset: 1 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(10, { base: #t~string29!base, offset: 2 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(0, { base: #t~string29!base, offset: 3 + #t~string29!offset }, 1); [?] havoc main_#res; [?] havoc main_#t~nondet28, main_~minInt~0, main_~x~0; [L332] main_~minInt~0 := -2147483648; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0, main_~minInt~0=-2147483648] [L333] assert (if main_~minInt~0 < 0 && 0 != main_~minInt~0 % -1 then main_~minInt~0 / -1 - 1 else main_~minInt~0 / -1) <= 2147483647; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0, main_~minInt~0=-2147483648] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L334] FCALL call #t~string29 := #Ultimate.alloc(4); [L334] FCALL call write~init~int(37, { base: #t~string29!base, offset: #t~string29!offset }, 1); [L334] FCALL call write~init~int(100, { base: #t~string29!base, offset: 1 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(10, { base: #t~string29!base, offset: 2 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(0, { base: #t~string29!base, offset: 3 + #t~string29!offset }, 1); [?] havoc main_#res; [?] havoc main_#t~nondet28, main_~minInt~0, main_~x~0; [L332] main_~minInt~0 := -2147483648; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0, main_~minInt~0=-2147483648] [L333] assert (if main_~minInt~0 < 0 && 0 != main_~minInt~0 % -1 then main_~minInt~0 / -1 - 1 else main_~minInt~0 / -1) <= 2147483647; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0, main_~minInt~0=-2147483648] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L334] FCALL call #t~string29 := #Ultimate.alloc(4); [L334] FCALL call write~init~int(37, { base: #t~string29!base, offset: #t~string29!offset }, 1); [L334] FCALL call write~init~int(100, { base: #t~string29!base, offset: 1 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(10, { base: #t~string29!base, offset: 2 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(0, { base: #t~string29!base, offset: 3 + #t~string29!offset }, 1); [L332] ~minInt~0 := -2147483648; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0] [L333] assert (if ~minInt~0 < 0 && 0 != ~minInt~0 % -1 then ~minInt~0 / -1 - 1 else ~minInt~0 / -1) <= 2147483647; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L334] FCALL call #t~string29 := #Ultimate.alloc(4); [L334] FCALL call write~init~int(37, { base: #t~string29!base, offset: #t~string29!offset }, 1); [L334] FCALL call write~init~int(100, { base: #t~string29!base, offset: 1 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(10, { base: #t~string29!base, offset: 2 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(0, { base: #t~string29!base, offset: 3 + #t~string29!offset }, 1); [L332] ~minInt~0 := -2147483648; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0] [L333] assert (if ~minInt~0 < 0 && 0 != ~minInt~0 % -1 then ~minInt~0 / -1 - 1 else ~minInt~0 / -1) <= 2147483647; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0] [L332] int minInt = -2147483647 - 1; [L333] minInt / -1 ----- [2018-11-23 03:22:35,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 03:22:35 ImpRootNode [2018-11-23 03:22:35,445 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-23 03:22:35,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 03:22:35,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 03:22:35,446 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 03:22:35,446 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:35" (3/4) ... [2018-11-23 03:22:35,448 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];call #t~string29.base, #t~string29.offset := #Ultimate.alloc(4);call write~init~int(37, #t~string29.base, #t~string29.offset, 1);call write~init~int(100, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(10, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);havoc main_#res;havoc main_#t~nondet28, main_~minInt~0, main_~x~0;main_~minInt~0 := -2147483648; VAL [ULTIMATE.start_main_~minInt~0=(- 2147483648), |#NULL.base|=0, |#NULL.offset|=0, |#t~string29.base|=5, |#t~string29.offset|=0] [?] assume !((if main_~minInt~0 < 0 && 0 != main_~minInt~0 % -1 then main_~minInt~0 / -1 - 1 else main_~minInt~0 / -1) <= 2147483647); VAL [ULTIMATE.start_main_~minInt~0=(- 2147483648), |#NULL.base|=0, |#NULL.offset|=0, |#t~string29.base|=5, |#t~string29.offset|=0] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [L334] call #t~string29.base, #t~string29.offset := #Ultimate.alloc(4); [L334] call write~init~int(37, #t~string29.base, #t~string29.offset, 1); [L334] call write~init~int(100, #t~string29.base, 1 + #t~string29.offset, 1); [L334] call write~init~int(10, #t~string29.base, 2 + #t~string29.offset, 1); [L334] call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1); [?] havoc main_#res; [?] havoc main_#t~nondet28, main_~minInt~0, main_~x~0; [L332] main_~minInt~0 := -2147483648; VAL [#NULL.base=0, #NULL.offset=0, #t~string29.base=5, #t~string29.offset=0, main_~minInt~0=-2147483648] [L333] assert (if main_~minInt~0 < 0 && 0 != main_~minInt~0 % -1 then main_~minInt~0 / -1 - 1 else main_~minInt~0 / -1) <= 2147483647; VAL [#NULL.base=0, #NULL.offset=0, #t~string29.base=5, #t~string29.offset=0, main_~minInt~0=-2147483648] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [L334] call #t~string29.base, #t~string29.offset := #Ultimate.alloc(4); [L334] call write~init~int(37, #t~string29.base, #t~string29.offset, 1); [L334] call write~init~int(100, #t~string29.base, 1 + #t~string29.offset, 1); [L334] call write~init~int(10, #t~string29.base, 2 + #t~string29.offset, 1); [L334] call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1); [?] havoc main_#res; [?] havoc main_#t~nondet28, main_~minInt~0, main_~x~0; [L332] main_~minInt~0 := -2147483648; VAL [#NULL.base=0, #NULL.offset=0, #t~string29.base=5, #t~string29.offset=0, main_~minInt~0=-2147483648] [L333] assert (if main_~minInt~0 < 0 && 0 != main_~minInt~0 % -1 then main_~minInt~0 / -1 - 1 else main_~minInt~0 / -1) <= 2147483647; VAL [#NULL.base=0, #NULL.offset=0, #t~string29.base=5, #t~string29.offset=0, main_~minInt~0=-2147483648] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L334] FCALL call #t~string29 := #Ultimate.alloc(4); [L334] FCALL call write~init~int(37, { base: #t~string29!base, offset: #t~string29!offset }, 1); [L334] FCALL call write~init~int(100, { base: #t~string29!base, offset: 1 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(10, { base: #t~string29!base, offset: 2 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(0, { base: #t~string29!base, offset: 3 + #t~string29!offset }, 1); [?] havoc main_#res; [?] havoc main_#t~nondet28, main_~minInt~0, main_~x~0; [L332] main_~minInt~0 := -2147483648; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0, main_~minInt~0=-2147483648] [L333] assert (if main_~minInt~0 < 0 && 0 != main_~minInt~0 % -1 then main_~minInt~0 / -1 - 1 else main_~minInt~0 / -1) <= 2147483647; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0, main_~minInt~0=-2147483648] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L334] FCALL call #t~string29 := #Ultimate.alloc(4); [L334] FCALL call write~init~int(37, { base: #t~string29!base, offset: #t~string29!offset }, 1); [L334] FCALL call write~init~int(100, { base: #t~string29!base, offset: 1 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(10, { base: #t~string29!base, offset: 2 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(0, { base: #t~string29!base, offset: 3 + #t~string29!offset }, 1); [?] havoc main_#res; [?] havoc main_#t~nondet28, main_~minInt~0, main_~x~0; [L332] main_~minInt~0 := -2147483648; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0, main_~minInt~0=-2147483648] [L333] assert (if main_~minInt~0 < 0 && 0 != main_~minInt~0 % -1 then main_~minInt~0 / -1 - 1 else main_~minInt~0 / -1) <= 2147483647; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0, main_~minInt~0=-2147483648] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L334] FCALL call #t~string29 := #Ultimate.alloc(4); [L334] FCALL call write~init~int(37, { base: #t~string29!base, offset: #t~string29!offset }, 1); [L334] FCALL call write~init~int(100, { base: #t~string29!base, offset: 1 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(10, { base: #t~string29!base, offset: 2 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(0, { base: #t~string29!base, offset: 3 + #t~string29!offset }, 1); [L332] ~minInt~0 := -2147483648; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0] [L333] assert (if ~minInt~0 < 0 && 0 != ~minInt~0 % -1 then ~minInt~0 / -1 - 1 else ~minInt~0 / -1) <= 2147483647; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L334] FCALL call #t~string29 := #Ultimate.alloc(4); [L334] FCALL call write~init~int(37, { base: #t~string29!base, offset: #t~string29!offset }, 1); [L334] FCALL call write~init~int(100, { base: #t~string29!base, offset: 1 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(10, { base: #t~string29!base, offset: 2 + #t~string29!offset }, 1); [L334] FCALL call write~init~int(0, { base: #t~string29!base, offset: 3 + #t~string29!offset }, 1); [L332] ~minInt~0 := -2147483648; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0] [L333] assert (if ~minInt~0 < 0 && 0 != ~minInt~0 % -1 then ~minInt~0 / -1 - 1 else ~minInt~0 / -1) <= 2147483647; VAL [#NULL!base=0, #NULL!offset=0, #t~string29!base=5, #t~string29!offset=0] [L332] int minInt = -2147483647 - 1; [L333] minInt / -1 ----- [2018-11-23 03:22:35,478 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d926ba81-729f-4a36-b45c-405a2f2b16f3/bin-2019/ukojak/witness.graphml [2018-11-23 03:22:35,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 03:22:35,479 INFO L168 Benchmark]: Toolchain (without parser) took 822.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -140.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 03:22:35,480 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-11-23 03:22:35,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:35,481 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.64 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:35,482 INFO L168 Benchmark]: Boogie Preprocessor took 15.61 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:35,482 INFO L168 Benchmark]: RCFGBuilder took 244.36 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:35,482 INFO L168 Benchmark]: CodeCheck took 172.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:35,483 INFO L168 Benchmark]: Witness Printer took 32.64 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:35,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 13 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 333]: integer overflow possible integer overflow possible We found a FailurePath: [L332] int minInt = -2147483647 - 1; [L333] minInt / -1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 323.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.64 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.61 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 244.36 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * CodeCheck took 172.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 32.64 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...