./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_true-unreach-call4_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_true-unreach-call4_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8538ad1ae962a1ba831f755fb5c2de9d27f82db5 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:47:56,125 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:47:56,126 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:47:56,139 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:47:56,139 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:47:56,140 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:47:56,141 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:47:56,142 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:47:56,143 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:47:56,144 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:47:56,145 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:47:56,145 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:47:56,146 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:47:56,146 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:47:56,148 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:47:56,148 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:47:56,149 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:47:56,150 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:47:56,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:47:56,153 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:47:56,154 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:47:56,155 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:47:56,157 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:47:56,157 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:47:56,158 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:47:56,158 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:47:56,159 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:47:56,160 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:47:56,161 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:47:56,162 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:47:56,162 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:47:56,162 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:47:56,162 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:47:56,163 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:47:56,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:47:56,165 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:47:56,165 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 22:47:56,175 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:47:56,176 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:47:56,176 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:47:56,176 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:47:56,177 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:47:56,177 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:47:56,177 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 22:47:56,177 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:47:56,177 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 22:47:56,177 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 22:47:56,177 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:47:56,178 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:47:56,178 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:47:56,178 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:47:56,178 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:47:56,178 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:47:56,179 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:47:56,179 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:47:56,179 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:47:56,179 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:47:56,181 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:47:56,181 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:47:56,181 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:47:56,181 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:47:56,181 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:47:56,182 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:47:56,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:47:56,182 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:47:56,182 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:47:56,182 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:47:56,182 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 22:47:56,182 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:47:56,183 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:47:56,183 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:47:56,183 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan 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 ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> 8538ad1ae962a1ba831f755fb5c2de9d27f82db5 [2018-10-26 22:47:56,209 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:47:56,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:47:56,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:47:56,223 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:47:56,223 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:47:56,224 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_true-unreach-call4_true-termination.i [2018-10-26 22:47:56,267 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/data/cd9ebb1e5/d726dca0ec1e4a5099e966200e847792/FLAG490d108f7 [2018-10-26 22:47:56,608 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:47:56,608 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/sv-benchmarks/c/loop-crafted/simple_array_index_value_true-unreach-call4_true-termination.i [2018-10-26 22:47:56,614 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/data/cd9ebb1e5/d726dca0ec1e4a5099e966200e847792/FLAG490d108f7 [2018-10-26 22:47:56,624 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/data/cd9ebb1e5/d726dca0ec1e4a5099e966200e847792 [2018-10-26 22:47:56,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:47:56,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 22:47:56,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:47:56,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:47:56,632 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:47:56,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:47:56" (1/1) ... [2018-10-26 22:47:56,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0c1537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56, skipping insertion in model container [2018-10-26 22:47:56,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:47:56" (1/1) ... [2018-10-26 22:47:56,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:47:56,661 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:47:56,780 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:47:56,783 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:47:56,798 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:47:56,814 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:47:56,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56 WrapperNode [2018-10-26 22:47:56,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:47:56,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:47:56,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:47:56,815 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:47:56,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56" (1/1) ... [2018-10-26 22:47:56,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56" (1/1) ... [2018-10-26 22:47:56,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:47:56,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:47:56,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:47:56,846 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:47:56,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56" (1/1) ... [2018-10-26 22:47:56,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56" (1/1) ... [2018-10-26 22:47:56,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56" (1/1) ... [2018-10-26 22:47:56,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56" (1/1) ... [2018-10-26 22:47:56,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56" (1/1) ... [2018-10-26 22:47:56,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56" (1/1) ... [2018-10-26 22:47:56,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56" (1/1) ... [2018-10-26 22:47:56,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:47:56,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:47:56,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:47:56,866 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:47:56,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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:2000 [2018-10-26 22:47:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:47:56,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:47:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:47:56,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:47:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:47:56,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:47:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:47:56,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:47:57,398 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:47:57,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:47:57 BoogieIcfgContainer [2018-10-26 22:47:57,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:47:57,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:47:57,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:47:57,405 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:47:57,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:47:56" (1/3) ... [2018-10-26 22:47:57,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1843ff33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:47:57, skipping insertion in model container [2018-10-26 22:47:57,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:56" (2/3) ... [2018-10-26 22:47:57,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1843ff33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:47:57, skipping insertion in model container [2018-10-26 22:47:57,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:47:57" (3/3) ... [2018-10-26 22:47:57,409 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_true-unreach-call4_true-termination.i [2018-10-26 22:47:57,418 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:47:57,425 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:47:57,439 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:47:57,466 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:47:57,466 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:47:57,466 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:47:57,466 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:47:57,466 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:47:57,467 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:47:57,467 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:47:57,467 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:47:57,482 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-10-26 22:47:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 22:47:57,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:47:57,488 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:47:57,490 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:47:57,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:47:57,495 INFO L82 PathProgramCache]: Analyzing trace with hash 853272646, now seen corresponding path program 1 times [2018-10-26 22:47:57,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:47:57,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:47:57,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:47:57,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:47:57,546 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:47:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:47:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:47:57,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:47:57,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:47:57,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:47:57,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:47:57,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:47:57,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:47:57,821 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2018-10-26 22:47:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:47:57,994 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2018-10-26 22:47:57,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:47:57,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-26 22:47:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:47:58,003 INFO L225 Difference]: With dead ends: 62 [2018-10-26 22:47:58,003 INFO L226 Difference]: Without dead ends: 34 [2018-10-26 22:47:58,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:47:58,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-26 22:47:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2018-10-26 22:47:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-26 22:47:58,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-10-26 22:47:58,043 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12 [2018-10-26 22:47:58,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:47:58,044 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-10-26 22:47:58,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:47:58,044 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-10-26 22:47:58,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 22:47:58,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:47:58,046 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:47:58,046 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:47:58,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:47:58,046 INFO L82 PathProgramCache]: Analyzing trace with hash 653700861, now seen corresponding path program 1 times [2018-10-26 22:47:58,046 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:47:58,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:47:58,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:47:58,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:47:58,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:47:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:47:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:47:58,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:47:58,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:47:58,117 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:47:58,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:47:58,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:47:58,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:47:58,119 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 3 states. [2018-10-26 22:47:58,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:47:58,161 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-10-26 22:47:58,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:47:58,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-26 22:47:58,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:47:58,163 INFO L225 Difference]: With dead ends: 40 [2018-10-26 22:47:58,163 INFO L226 Difference]: Without dead ends: 29 [2018-10-26 22:47:58,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:47:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-26 22:47:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2018-10-26 22:47:58,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-26 22:47:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-10-26 22:47:58,170 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2018-10-26 22:47:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:47:58,171 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-10-26 22:47:58,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:47:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-10-26 22:47:58,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 22:47:58,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:47:58,172 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:47:58,173 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:47:58,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:47:58,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1313509780, now seen corresponding path program 1 times [2018-10-26 22:47:58,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:47:58,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:47:58,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:47:58,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:47:58,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:47:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:47:58,437 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-10-26 22:47:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:47:58,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:47:58,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 22:47:58,525 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:47:58,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 22:47:58,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 22:47:58,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:47:58,527 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 8 states. [2018-10-26 22:47:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:47:58,731 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-10-26 22:47:58,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 22:47:58,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-10-26 22:47:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:47:58,734 INFO L225 Difference]: With dead ends: 43 [2018-10-26 22:47:58,734 INFO L226 Difference]: Without dead ends: 41 [2018-10-26 22:47:58,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:47:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-26 22:47:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 27. [2018-10-26 22:47:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-26 22:47:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-10-26 22:47:58,741 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 20 [2018-10-26 22:47:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:47:58,741 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-10-26 22:47:58,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 22:47:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-10-26 22:47:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 22:47:58,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:47:58,742 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:47:58,742 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:47:58,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:47:58,743 INFO L82 PathProgramCache]: Analyzing trace with hash 2042551023, now seen corresponding path program 1 times [2018-10-26 22:47:58,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:47:58,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:47:58,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:47:58,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:47:58,745 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:47:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:47:59,036 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-26 22:47:59,302 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2018-10-26 22:47:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:47:59,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:47:59,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-26 22:47:59,661 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:47:59,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 22:47:59,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 22:47:59,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:47:59,662 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2018-10-26 22:48:01,870 WARN L179 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 60 DAG size of output: 28 [2018-10-26 22:48:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:48:15,346 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-10-26 22:48:15,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 22:48:15,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-10-26 22:48:15,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:48:15,362 INFO L225 Difference]: With dead ends: 31 [2018-10-26 22:48:15,362 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 22:48:15,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=42, Invalid=113, Unknown=1, NotChecked=0, Total=156 [2018-10-26 22:48:15,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 22:48:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 22:48:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 22:48:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 22:48:15,363 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-10-26 22:48:15,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:48:15,364 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 22:48:15,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 22:48:15,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 22:48:15,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 22:48:15,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 22:48:15,757 WARN L179 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-26 22:48:16,244 WARN L179 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2018-10-26 22:48:16,272 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 22:48:16,272 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 22:48:16,272 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:48:16,272 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:48:16,272 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 22:48:16,272 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 22:48:16,272 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 22:48:16,273 INFO L425 ceAbstractionStarter]: For program point L31-1(lines 31 37) no Hoare annotation was computed. [2018-10-26 22:48:16,273 INFO L421 ceAbstractionStarter]: At program point L31-3(lines 31 37) the Hoare annotation is: (or (let ((.cse3 (div (+ main_~index2~0 4294867297) 4294967296)) (.cse5 (div (+ main_~index1~0 (- 1)) 4294967296)) (.cse4 (* 4 main_~index2~0))) (or (and (let ((.cse2 (select |#memory_int| |main_~#array~0.base|))) (let ((.cse0 (select .cse2 (+ |main_~#array~0.offset| (+ .cse4 (* (- 17179869184) .cse3)))))) (<= .cse0 (let ((.cse1 (select .cse2 (+ |main_~#array~0.offset| (* 4 (+ main_~index2~0 (+ (* (- 4294967296) .cse3) 1))))))) (+ .cse1 (* 4294967296 (div (+ (- .cse1) .cse0) 4294967296))))))) (<= (+ (* 4294967296 .cse3) main_~index1~0) (+ (* 4294967296 .cse5) main_~index2~0 1))) (<= (+ (* 17179869184 .cse3) (* 4 main_~index1~0)) (+ (* 17179869184 .cse5) .cse4 3)))) (and (<= main_~index1~0 (+ (* 4294967296 (div main_~index1~0 4294967296)) 99999)) (<= main_~index2~0 (+ (* 4294967296 (div main_~index2~0 4294967296)) 99999)) (= main_~loop_entered~0 0))) [2018-10-26 22:48:16,273 INFO L425 ceAbstractionStarter]: For program point L31-4(lines 20 47) no Hoare annotation was computed. [2018-10-26 22:48:16,273 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 19 47) no Hoare annotation was computed. [2018-10-26 22:48:16,273 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 19 47) no Hoare annotation was computed. [2018-10-26 22:48:16,273 INFO L425 ceAbstractionStarter]: For program point L40-1(lines 40 44) no Hoare annotation was computed. [2018-10-26 22:48:16,274 INFO L421 ceAbstractionStarter]: At program point L40-3(lines 40 44) the Hoare annotation is: (let ((.cse1 (* 4 main_~index2~0))) (or (let ((.cse0 (div main_~index2~0 4294967296))) (and (<= main_~index2~0 (+ (* 4294967296 .cse0) 99999)) (<= (+ (* 17179869184 .cse0) (* 4 main_~index1~0)) (+ .cse1 (* 17179869184 (div main_~index1~0 4294967296)) 3)))) (let ((.cse5 (div (+ main_~index2~0 4294867297) 4294967296))) (and (let ((.cse4 (select |#memory_int| |main_~#array~0.base|))) (let ((.cse2 (select .cse4 (+ |main_~#array~0.offset| (+ .cse1 (* (- 17179869184) .cse5)))))) (<= .cse2 (let ((.cse3 (select .cse4 (+ |main_~#array~0.offset| (* 4 (+ main_~index2~0 (+ (* (- 4294967296) .cse5) 1))))))) (+ .cse3 (* 4294967296 (div (+ (- .cse3) .cse2) 4294967296))))))) (<= (+ (* 4294967296 .cse5) main_~index1~0) (+ (* 4294967296 (div (+ main_~index1~0 (- 1)) 4294967296)) main_~index2~0 1)))))) [2018-10-26 22:48:16,274 INFO L421 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~index2~0 4294967296)))) (and (or (and (<= main_~index2~0 (+ .cse0 99999)) (= main_~loop_entered~0 0)) (<= main_~index2~0 (+ .cse0 99998))) (<= (+ .cse0 main_~index1~0 1) (+ main_~index2~0 (* 4294967296 (div main_~index1~0 4294967296)))))) [2018-10-26 22:48:16,274 INFO L425 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2018-10-26 22:48:16,274 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 19 47) the Hoare annotation is: true [2018-10-26 22:48:16,274 INFO L421 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: (and (let ((.cse3 (div (+ main_~index2~0 4294867297) 4294967296)) (.cse5 (div (+ main_~index1~0 (- 1)) 4294967296)) (.cse4 (* 4 main_~index2~0))) (or (and (let ((.cse2 (select |#memory_int| |main_~#array~0.base|))) (let ((.cse0 (select .cse2 (+ |main_~#array~0.offset| (+ .cse4 (* (- 17179869184) .cse3)))))) (<= .cse0 (let ((.cse1 (select .cse2 (+ |main_~#array~0.offset| (* 4 (+ main_~index2~0 (+ (* (- 4294967296) .cse3) 1))))))) (+ .cse1 (* 4294967296 (div (+ (- .cse1) .cse0) 4294967296))))))) (<= (+ (* 4294967296 .cse3) main_~index1~0) (+ (* 4294967296 .cse5) main_~index2~0 1))) (<= (+ (* 17179869184 .cse3) (* 4 main_~index1~0)) (+ (* 17179869184 .cse5) .cse4 3)))) (<= |main_#t~mem8| (+ |main_#t~mem7| (* 4294967296 (div (+ |main_#t~mem8| (- |main_#t~mem7|)) 4294967296))))) [2018-10-26 22:48:16,275 INFO L425 ceAbstractionStarter]: For program point L41-1(line 41) no Hoare annotation was computed. [2018-10-26 22:48:16,275 INFO L425 ceAbstractionStarter]: For program point L39(lines 39 45) no Hoare annotation was computed. [2018-10-26 22:48:16,275 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2018-10-26 22:48:16,275 INFO L425 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2018-10-26 22:48:16,275 INFO L425 ceAbstractionStarter]: For program point L11(lines 11 13) no Hoare annotation was computed. [2018-10-26 22:48:16,279 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2018-10-26 22:48:16,279 INFO L425 ceAbstractionStarter]: For program point L11-2(lines 9 15) no Hoare annotation was computed. [2018-10-26 22:48:16,279 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2018-10-26 22:48:16,286 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,287 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,287 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,288 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,295 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,295 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,295 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,295 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,297 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,297 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,297 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,297 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,298 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,298 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,299 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,299 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:48:16 BoogieIcfgContainer [2018-10-26 22:48:16,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:48:16,301 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:48:16,301 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:48:16,302 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:48:16,303 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:47:57" (3/4) ... [2018-10-26 22:48:16,306 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 22:48:16,312 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 22:48:16,312 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 22:48:16,312 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 22:48:16,316 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2018-10-26 22:48:16,316 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-10-26 22:48:16,316 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-26 22:48:16,316 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-26 22:48:16,366 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_850db3d5-6c07-462a-98fd-d52abccc881a/bin-2019/utaipan/witness.graphml [2018-10-26 22:48:16,370 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:48:16,371 INFO L168 Benchmark]: Toolchain (without parser) took 19744.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 957.0 MB in the beginning and 957.9 MB in the end (delta: -981.6 kB). Peak memory consumption was 141.1 MB. Max. memory is 11.5 GB. [2018-10-26 22:48:16,372 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:48:16,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.29 ms. Allocated memory is still 1.0 GB. Free memory was 957.0 MB in the beginning and 946.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:48:16,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.85 ms. Allocated memory is still 1.0 GB. Free memory was 946.2 MB in the beginning and 943.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:48:16,373 INFO L168 Benchmark]: Boogie Preprocessor took 19.90 ms. Allocated memory is still 1.0 GB. Free memory is still 943.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:48:16,373 INFO L168 Benchmark]: RCFGBuilder took 533.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:48:16,374 INFO L168 Benchmark]: TraceAbstraction took 18901.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.3 MB in the end (delta: 160.5 MB). Peak memory consumption was 160.5 MB. Max. memory is 11.5 GB. [2018-10-26 22:48:16,374 INFO L168 Benchmark]: Witness Printer took 69.26 ms. Allocated memory is still 1.2 GB. Free memory was 963.3 MB in the beginning and 957.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 22:48:16,380 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 186.29 ms. Allocated memory is still 1.0 GB. Free memory was 957.0 MB in the beginning and 946.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.85 ms. Allocated memory is still 1.0 GB. Free memory was 946.2 MB in the beginning and 943.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.90 ms. Allocated memory is still 1.0 GB. Free memory is still 943.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 533.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18901.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.3 MB in the end (delta: 160.5 MB). Peak memory consumption was 160.5 MB. Max. memory is 11.5 GB. * Witness Printer took 69.26 ms. Allocated memory is still 1.2 GB. Free memory was 963.3 MB in the beginning and 957.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant [2018-10-26 22:48:16,391 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,391 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,391 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,398 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,399 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,399 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,399 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,400 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((unknown-#memory_int-unknown[array][array + (4 * index2 + -17179869184 * ((index2 + 4294867297) / 4294967296))] <= unknown-#memory_int-unknown[array][array + 4 * (index2 + (-4294967296 * ((index2 + 4294867297) / 4294967296) + 1))] + 4294967296 * ((-unknown-#memory_int-unknown[array][array + 4 * (index2 + (-4294967296 * ((index2 + 4294867297) / 4294967296) + 1))] + unknown-#memory_int-unknown[array][array + (4 * index2 + -17179869184 * ((index2 + 4294867297) / 4294967296))]) / 4294967296) && 4294967296 * ((index2 + 4294867297) / 4294967296) + index1 <= 4294967296 * ((index1 + -1) / 4294967296) + index2 + 1) || 17179869184 * ((index2 + 4294867297) / 4294967296) + 4 * index1 <= 17179869184 * ((index1 + -1) / 4294967296) + 4 * index2 + 3) || ((index1 <= 4294967296 * (index1 / 4294967296) + 99999 && index2 <= 4294967296 * (index2 / 4294967296) + 99999) && loop_entered == 0) - InvariantResult [Line: 40]: Loop Invariant [2018-10-26 22:48:16,401 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,401 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,401 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,401 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,402 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,402 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,403 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 22:48:16,403 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (index2 <= 4294967296 * (index2 / 4294967296) + 99999 && 17179869184 * (index2 / 4294967296) + 4 * index1 <= 4 * index2 + 17179869184 * (index1 / 4294967296) + 3) || (unknown-#memory_int-unknown[array][array + (4 * index2 + -17179869184 * ((index2 + 4294867297) / 4294967296))] <= unknown-#memory_int-unknown[array][array + 4 * (index2 + (-4294967296 * ((index2 + 4294867297) / 4294967296) + 1))] + 4294967296 * ((-unknown-#memory_int-unknown[array][array + 4 * (index2 + (-4294967296 * ((index2 + 4294867297) / 4294967296) + 1))] + unknown-#memory_int-unknown[array][array + (4 * index2 + -17179869184 * ((index2 + 4294867297) / 4294967296))]) / 4294967296) && 4294967296 * ((index2 + 4294867297) / 4294967296) + index1 <= 4294967296 * ((index1 + -1) / 4294967296) + index2 + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 18.8s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 16.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 53 SDslu, 206 SDs, 0 SdLazy, 149 SolverSat, 25 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, traceCheckStatistics: No data available, 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 465 HoareAnnotationTreeSize, 14 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 238 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 19265 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 9/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...