./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/memsafety/test-0214.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/memsafety/test-0214.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bbad5595d4a380534920239c65f21022d7390d8a ............................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 21:26:19,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 21:26:19,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 21:26:19,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 21:26:19,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 21:26:19,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 21:26:19,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 21:26:19,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 21:26:19,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 21:26:19,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 21:26:19,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 21:26:19,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 21:26:19,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 21:26:19,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 21:26:19,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 21:26:19,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 21:26:19,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 21:26:19,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 21:26:19,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 21:26:19,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 21:26:19,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 21:26:19,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 21:26:19,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 21:26:19,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 21:26:19,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 21:26:19,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 21:26:19,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 21:26:19,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 21:26:19,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 21:26:19,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 21:26:19,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 21:26:19,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 21:26:19,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 21:26:19,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 21:26:19,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 21:26:19,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 21:26:19,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 21:26:19,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 21:26:19,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 21:26:19,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 21:26:19,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 21:26:19,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 21:26:19,859 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 21:26:19,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 21:26:19,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 21:26:19,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 21:26:19,861 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 21:26:19,862 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 21:26:19,862 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 21:26:19,862 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 21:26:19,862 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 21:26:19,863 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 21:26:19,863 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 21:26:19,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 21:26:19,863 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 21:26:19,864 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 21:26:19,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 21:26:19,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 21:26:19,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 21:26:19,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 21:26:19,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 21:26:19,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 21:26:19,866 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 21:26:19,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 21:26:19,866 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 21:26:19,866 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 21:26:19,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 21:26:19,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 21:26:19,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 21:26:19,868 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 21:26:19,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 21:26:19,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 21:26:19,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 21:26:19,869 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 21:26:19,870 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 21:26:19,870 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbad5595d4a380534920239c65f21022d7390d8a [2019-11-28 21:26:20,194 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 21:26:20,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 21:26:20,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 21:26:20,213 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 21:26:20,213 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 21:26:20,214 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0214.i [2019-11-28 21:26:20,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af945e8fa/a6aeffb9c96f476ab5491c563c10f133/FLAGd5a9d1658 [2019-11-28 21:26:20,848 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 21:26:20,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0214.i [2019-11-28 21:26:20,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af945e8fa/a6aeffb9c96f476ab5491c563c10f133/FLAGd5a9d1658 [2019-11-28 21:26:21,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af945e8fa/a6aeffb9c96f476ab5491c563c10f133 [2019-11-28 21:26:21,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 21:26:21,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 21:26:21,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 21:26:21,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 21:26:21,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 21:26:21,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:26:21" (1/1) ... [2019-11-28 21:26:21,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f672ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21, skipping insertion in model container [2019-11-28 21:26:21,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:26:21" (1/1) ... [2019-11-28 21:26:21,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 21:26:21,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 21:26:21,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:26:21,677 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 21:26:21,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:26:21,885 INFO L208 MainTranslator]: Completed translation [2019-11-28 21:26:21,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21 WrapperNode [2019-11-28 21:26:21,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 21:26:21,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 21:26:21,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 21:26:21,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 21:26:21,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21" (1/1) ... [2019-11-28 21:26:21,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21" (1/1) ... [2019-11-28 21:26:21,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 21:26:21,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 21:26:21,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 21:26:21,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 21:26:21,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21" (1/1) ... [2019-11-28 21:26:21,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21" (1/1) ... [2019-11-28 21:26:21,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21" (1/1) ... [2019-11-28 21:26:21,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21" (1/1) ... [2019-11-28 21:26:21,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21" (1/1) ... [2019-11-28 21:26:21,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21" (1/1) ... [2019-11-28 21:26:21,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21" (1/1) ... [2019-11-28 21:26:21,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 21:26:21,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 21:26:21,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 21:26:21,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 21:26:21,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:26:22,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 21:26:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-28 21:26:22,058 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-28 21:26:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 21:26:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 21:26:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 21:26:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 21:26:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 21:26:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-28 21:26:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 21:26:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 21:26:22,223 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-28 21:26:22,604 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 21:26:22,604 INFO L287 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-28 21:26:22,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:26:22 BoogieIcfgContainer [2019-11-28 21:26:22,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 21:26:22,607 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 21:26:22,610 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 21:26:22,614 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 21:26:22,615 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:26:22,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 09:26:21" (1/3) ... [2019-11-28 21:26:22,617 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@538b1f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:26:22, skipping insertion in model container [2019-11-28 21:26:22,618 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:26:22,618 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:26:21" (2/3) ... [2019-11-28 21:26:22,618 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@538b1f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:26:22, skipping insertion in model container [2019-11-28 21:26:22,619 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:26:22,619 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:26:22" (3/3) ... [2019-11-28 21:26:22,621 INFO L371 chiAutomizerObserver]: Analyzing ICFG test-0214.i [2019-11-28 21:26:22,677 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 21:26:22,678 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 21:26:22,678 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 21:26:22,678 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 21:26:22,679 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 21:26:22,679 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 21:26:22,679 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 21:26:22,679 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 21:26:22,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states. [2019-11-28 21:26:22,720 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 33 [2019-11-28 21:26:22,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:26:22,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:26:22,726 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 21:26:22,727 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:26:22,727 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 21:26:22,727 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states. [2019-11-28 21:26:22,731 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 33 [2019-11-28 21:26:22,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:26:22,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:26:22,732 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 21:26:22,732 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:26:22,739 INFO L794 eck$LassoCheckResult]: Stem: 42#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#list~0.base, ~#list~0.offset := #Ultimate.allocOnStack(8);call write~init~$Pointer$(0, 0, ~#list~0.base, ~#list~0.offset, 4);call write~init~$Pointer$(0, 0, ~#list~0.base, 4 + ~#list~0.offset, 4); 17#L-1true havoc main_#res;havoc main_#t~ret22, main_#t~nondet21, main_#t~ret24, main_#t~nondet23, main_#t~nondet20, main_#t~nondet25, main_#t~mem26.base, main_#t~mem26.offset, main_#t~mem27.base, main_#t~mem27.offset, main_~next~1.base, main_~next~1.offset, main_~end_point~0, main_~direction~0, main_~cursor~0.base, main_~cursor~0.offset; 39#L717-2true [2019-11-28 21:26:22,739 INFO L796 eck$LassoCheckResult]: Loop: 39#L717-2true assume !!(0 != main_#t~nondet20);havoc main_#t~nondet20; 21#L715-2true assume !true; 36#L717-1true assume !true; 39#L717-2true [2019-11-28 21:26:22,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:26:22,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1251, now seen corresponding path program 1 times [2019-11-28 21:26:22,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:26:22,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934880891] [2019-11-28 21:26:22,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:26:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:22,869 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:26:22,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:26:22,871 INFO L82 PathProgramCache]: Analyzing trace with hash 51626, now seen corresponding path program 1 times [2019-11-28 21:26:22,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:26:22,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578391060] [2019-11-28 21:26:22,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:26:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:26:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:26:22,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578391060] [2019-11-28 21:26:22,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:26:22,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 21:26:22,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572220759] [2019-11-28 21:26:22,912 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 21:26:22,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:26:22,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 21:26:22,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 21:26:22,932 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2019-11-28 21:26:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:26:22,945 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2019-11-28 21:26:22,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 21:26:22,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 63 transitions. [2019-11-28 21:26:22,951 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 33 [2019-11-28 21:26:22,958 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 42 states and 59 transitions. [2019-11-28 21:26:22,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2019-11-28 21:26:22,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-11-28 21:26:22,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 59 transitions. [2019-11-28 21:26:22,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:26:22,962 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 59 transitions. [2019-11-28 21:26:22,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 59 transitions. [2019-11-28 21:26:22,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-11-28 21:26:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-28 21:26:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2019-11-28 21:26:22,998 INFO L711 BuchiCegarLoop]: Abstraction has 42 states and 59 transitions. [2019-11-28 21:26:22,998 INFO L591 BuchiCegarLoop]: Abstraction has 42 states and 59 transitions. [2019-11-28 21:26:22,998 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 21:26:22,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 59 transitions. [2019-11-28 21:26:23,000 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 33 [2019-11-28 21:26:23,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:26:23,001 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:26:23,001 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 21:26:23,001 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:26:23,002 INFO L794 eck$LassoCheckResult]: Stem: 139#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#list~0.base, ~#list~0.offset := #Ultimate.allocOnStack(8);call write~init~$Pointer$(0, 0, ~#list~0.base, ~#list~0.offset, 4);call write~init~$Pointer$(0, 0, ~#list~0.base, 4 + ~#list~0.offset, 4); 122#L-1 havoc main_#res;havoc main_#t~ret22, main_#t~nondet21, main_#t~ret24, main_#t~nondet23, main_#t~nondet20, main_#t~nondet25, main_#t~mem26.base, main_#t~mem26.offset, main_#t~mem27.base, main_#t~mem27.offset, main_~next~1.base, main_~next~1.offset, main_~end_point~0, main_~direction~0, main_~cursor~0.base, main_~cursor~0.offset; 123#L717-2 [2019-11-28 21:26:23,002 INFO L796 eck$LassoCheckResult]: Loop: 123#L717-2 assume !!(0 != main_#t~nondet20);havoc main_#t~nondet20; 124#L715-2 assume !(0 != main_#t~nondet21);havoc main_#t~nondet21; 125#L717-1 assume !(0 != main_#t~nondet23);havoc main_#t~nondet23; 123#L717-2 [2019-11-28 21:26:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:26:23,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1251, now seen corresponding path program 2 times [2019-11-28 21:26:23,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:26:23,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295099608] [2019-11-28 21:26:23,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:26:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:23,028 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:26:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:26:23,029 INFO L82 PathProgramCache]: Analyzing trace with hash 49935, now seen corresponding path program 1 times [2019-11-28 21:26:23,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:26:23,030 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679379251] [2019-11-28 21:26:23,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:26:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:23,043 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:26:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:26:23,044 INFO L82 PathProgramCache]: Analyzing trace with hash 37288685, now seen corresponding path program 1 times [2019-11-28 21:26:23,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:26:23,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132132106] [2019-11-28 21:26:23,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:26:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:26:23,096 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:26:23,265 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2019-11-28 21:26:23,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 09:26:23 BoogieIcfgContainer [2019-11-28 21:26:23,334 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 21:26:23,335 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 21:26:23,336 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 21:26:23,336 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 21:26:23,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:26:22" (3/4) ... [2019-11-28 21:26:23,340 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 21:26:23,396 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 21:26:23,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 21:26:23,398 INFO L168 Benchmark]: Toolchain (without parser) took 2277.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 946.9 MB in the beginning and 1.0 GB in the end (delta: -71.3 MB). Peak memory consumption was 69.2 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:23,399 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 21:26:23,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -161.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:23,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:23,401 INFO L168 Benchmark]: Boogie Preprocessor took 43.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 21:26:23,402 INFO L168 Benchmark]: RCFGBuilder took 610.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:23,403 INFO L168 Benchmark]: BuchiAutomizer took 727.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:23,404 INFO L168 Benchmark]: Witness Printer took 60.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 21:26:23,409 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 766.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -161.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 610.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 727.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. * Witness Printer took 60.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 2 locations. The remainder module has 42 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 42 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 63 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 714]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@343500b6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@611eefb0=0, NULL=0, \result=0, end_point=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@170870cf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@170870cf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44de6a59=12, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2427940b=0, NULL=0, list=2, list=0, next=0, next=0, cursor=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@536816ba=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@71fc3673=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49df65e0=0, cursor=0, direction=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@71fc3673=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 714]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L713] static list_t list; Loop: [L714] COND TRUE __VERIFIER_nondet_int() [L715] COND FALSE !(__VERIFIER_nondet_int()) [L717] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...